PZ - Wetland Delineation Final 1.04435 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation Report
Prepared By
The Wetlands Group, LLC
100 S Star Road, Suite 112
Star, Idaho 83669
October 12, 2017
TABLE OF CONTENTS
Page
1.0 INTRODUCTION ....................................................................................................................1
2.0 SOURCE MATERIALS AND METHODS.............................................................................1
2.1 Source Materials.............................................................................................................1
2.2 Background Information.................................................................................................4
2.3 Data Collection Methods................................................................................................4
3.0 EXISTING SITE CHARACTERISTICS.................................................................................4
3.1 Landscape Context and Position.....................................................................................4
3.2 Topography....................................................................................................................6
3.3 Hydrology......................................................................................................................6
3.4 Soils...............................................................................................................................8
3.5 Vegetation......................................................................................................................8
4.0 WETLAND AND OPEN WATER FINDINGS .......................................................................9
4.1 Wetland 1.....................................................................................................................11
4.2 Wetland 2.....................................................................................................................13
4.3 Wetland 3.....................................................................................................................13
4.4 Wetlands 4...................................................................................................................14
4.5 Wetlands 5...................................................................................................................14
4.6 Wetlands 6...................................................................................................................15
4.7 Wetlands 7...................................................................................................................15
4.8 Wetlands 8...................................................................................................................16
4.9 Open water...................................................................................................................16
4.10 Upland 1 ......................................................................................................................17
4.11 Upland 2 ......................................................................................................................17
4.12 Upland 3 ......................................................................................................................17
5.0 DISCUSSION..........................................................................................................................17
6.0 SUMMARY.............................................................................................................................19
7.0 REFERENCES .......................................................................................................................20
List of Tables
Table 2: Dominant Wetland Plants and Indicator Status............................................................... 9
Table 3: Wetland Community Type and Acreage in Project area............................................... 10
Table 4: Summary of Wetlands................................................................................................... 12
List of Figures
Figure 1:Project Vicinity Map............................................................................................... 2
Figure 2:Project Area Map.................................................................................................... 3
Figure 3:Wetland Location Map ........................................................................................... 5
Appendices
Appendix A: Historic Aerial Photographs
Appendix B: Wetland Delineation Data Sheets
Appendix C: Site Photographs
Appendix D: Irrigation Flow and Well Location Map
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 1 October 11, 2017
1.0 INTRODUCTION
The Wetlands Group has delineated the property at 4435 Black Cat Road, Meridian, Ada
County, Idaho for Trilogy Development Meridian,Idaho.The project area is located .25 miles
south of the intersection of Black Cat Road and McMillan Road in Meridian Idaho (Figure 1).
The wetlands delineation project area (project area) includes the 9.9 acre area as shown in Figure
2. The purpose of this wetland delineation is to identify wetlands that could be affected by the
proposed project.
Site location information is as follows:
A portion of the NE ¼ of Section 33
T 4 N, R 1 W
Hydrologic unit 17050114 (Lower Boise)
Latitude/Longitude 43.644543 and -116.455955
The Wetlands Group conducted a field survey in September and October 2017 to identify and
delineate wetlands within the project area. This wetland delineation report identifies and
describes wetlands found onsite.
2.0 SOURCE MATERIALS AND METHODS
2.1 Source Materials
Primary guidance documents for the investigation were the U.S. Army Corps of Engineers
Wetlands Delineation Manual (Environmental Laboratory 1987) and the Regional Supplement to
the Corps of Engineers Wetland Delineation Manual: Arid West Region (Version 2.0)
(Environmental Laboratory 2008). The U.S. Army Corps of Engineers (Corps) and the State of
Idaho recognize the use of the 1987 manual and the 2008 arid west supplement for wetland
delineations in Idaho.
These manuals provide technical guidance and recommended procedures to use in determining
whether an area is classified as a wetland and in delineating the wetland’s boundaries. As stated
in these manuals three conditions must be met before areas can be documented as a wetland, the
presence of hydric soils, hydrophytic vegetation, and wetland hydrology.
We st McMilla n Road
N o r t h
B l a c k
C a
t
R o a d
Wes t Ustick Road
!IDA HONampa
Boise
Eagle
Me ridian
MERIDIAN, AD A, IDAHOLOCATED IN SECTION 33,T04N, R01W
Projec tArea
´
Figure 1: Vicinity Map NN W N o: Waterbody: Riv er M ile : Loc ation: M erid ian , A da, Ida hoApplicant: Th e W etla nd s G rou pSheet Dat e: 201 7
4435 Black C at R oadRapid Creek Subdivis ion
^
Project LocationLat: 43.644543Long: -116.455955
U.S. Geologic al Surv ey STARQuadrangle
100 South Star Ro ad, Su ite 112Star, Idaho 83669Office: (208) 375-53 73
0 3,0001,500 Feet
We st McMilla n Road
N o r t h
B l a c k
C a
t
R o a d
Wes t Ustick Road
!IDA HONampa
Boise
Eagle
Me ridian
MERIDIAN, AD A, IDAHOLOCATED IN SECTION 33,T04N, R01W
Projec tArea
´
Figure 2: Project A rea Map NN W N o:Waterbody: Riv er M ile : Loc ation: M erid ian , A da, Ida hoApplicant: Th e W etla nd s G rou pSheet Dat e: 201 7
4435 Black C at R oadRapid Creek Subdivis ion
^
Project LocationLat: 43.644543Long: -116.455955
U.S. Geologic al Surv ey STARQuadrangle
100 South Star Ro ad, Su ite 112Star, Idaho 83669Office: (208) 375-53 73
0 3,0001,500 Feet
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 4 October 11, 2017
2.2 Background Information
Existing data were reviewed to determine potential wetland locations and site conditions prior to
initiating the fieldwork. Data sources reviewed for this study includes the following:
Satellite imagery (Google Earth 2017)
U.S. Geological Survey 1:24,000 topographic maps for the Star Quadrangle (USGS 2017).
Soil Survey of Ada County, Idaho (NRCS Web Soil Survey 2017);
U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory Maps (U.S. Fish and
Wildlife Service 2017).
Groundwater data provided by SITE Consulting, LLC
National Agriculture Image Program (NAIP 2015) Imagery, 1-meter resolution, 2015
Aerial photographs from 1939, 1951,1971 (Appendix A)
2.3 Data Collection Methods
All potential wetlands in the project area were investigated including irrigation laterals, ditches
and ponds. Irrigation-related waters were included because in April 2003, the Walla Walla
District of the Corps adopted the findings contained in the Headwaters Inc. vs. Talent Irrigation
court decision; this adoption extended the Corps’ regulatory jurisdiction under Section 404 of the
Clean Water Act to include irrigation waters and associated wetlands hydraulically connected to
waters of the United States. More recently, the Rapanos decision requires that in certain
circumstances, a “significant nexus” evaluation be conducted to support jurisdictional and non-
jurisdictional determinations.
Soils, vegetation, and hydrology data were selected to provide a valid representation of project
area conditions and representative sampling locations, which identify the location of the wetland
boundary. Each wetland was given a unique number and field data were recorded and
subsequently transferred to standard wetland delineation data sheets (Appendix B). Wetland
locations were identified on satellite imagery and surveyed using a Garmin eTrex® GPS. GPS
data were uploaded into ESRI's ArcMAP 10.4 and integrated with NAIP imagery to show
wetland locations. Photographs of the project area can be found in Appendix C.
3.0 EXISTING SITE CHARACTERISTICS
3.1 Landscape Context and Position
The project area is located in a mixed agricultural and urban setting along Black Cat Road. It is
bounded by a subdivision to the north, an unnamed irrigation drain and subdivision to the west,
an access roadway and a irrigated pasture to the south and Black Cat Road and an agricultural
field to the east. As recently as 2013 the site was bounded on the north by agricultural land. A
residential house with a landscaped yard and dog kennels are located on the eastern portion of
the property occupying 2 acres of the project area adjacent to Black Cat Road (Figure 3). The
remaining portion of the property to the west includes a 1.21 acre man-made pond surrounded
AGRICULTURA L
UPL-2
OW
RESIDENTIAL LOT
UPL-1
W-1
OW
W-5 UPL-1
UPL-2
UPL-2
UPL-3
UPL-2
W-3
W-3
W-2
W-6
W-6
W-8
W-4
W-6
UPL-2
W-7
0 200100 Feet
´
Figure 3: WetlandLocation Map NN W N o:Waterbody: Riv er M ile : Loc ation: M erid ian , A da, Ida hoApplicant: The We tla nds G rou p SheetDate: 201 7
4435 Black C at R oadRapid Creek Subdivis ion
100 South Star Ro ad, Su ite 112Star, ID . 83669Office: (208) 375-53 73
Existing Wetlands within Property LineCommunity Type Sqft AcresW-1 9098.10 0.21W-2 2657.50 0.06W-3 7160.44 0.16W-4 4062.75 0.09W-5 5914.30 0.14W-6 4810.68 0.11W-7 565.55 0.01W-8 1682.70 0.04OW52505.33 1.21
PR OJECT B OUNDARY
WETLAND TYPE
PEM
PSS
UPLAND S
OPEN WAT E R
RESI DENT IA L
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 6 October 11, 2017
with irrigated and dry pastureland. An unnamed irrigation ditch enters the northeast corner of
the project area, runs along the north edge of the property past the residential area and across a
pasture to the south edge of the property and exits the southwest corner of the property through a
culvert. A berm is located along the south boundary of the property, north of the ditch, from the
west side of the residential property to the west side of the property.
3.2 Topography
The topography in the project area is relatively flat and gently slopes down from northeast to
southwest. A sediment pond and pond have been excavated on the west side of the property.
There is a slight depression or low area on the southwest corner of the property that collects
water and acts as a drainage through a culvert C2 when the pond overflows. The elevation
ranges onsite are generally from 2544 feet in the residential area to 2532 feet in the southwest
corner (Google Earth 2017).
3.3 Hydrology
Overview
The property owner, Ms. Linda Harger of North Star Kennel and Spa, purchased the property in
1985. At that time, she noted the residential area (house, kennel facility and lawn) was an upland
and the area west of the residential area where the pond is currently located was an unmanaged
upland pasture. Review of aerial photographs from 1938 through 1971 confirmed a pond was
not present on the property and an upland pasture with an irrigation ditch was present west of the
residential area (see Appendix A-Aerial Photographs). The 1951 and 1971 aerial photos also
show water collecting in the southwest corner of the site. The Landscape Plumbing: Mapping
the Water of the Treasure Valley (IDEQ 2016) identifies the irrigation ditch flowing through the
property listed as an “unnamed drain”. Since the water is not visible in the 1939 and 1954
photos this may be tailwater collection in a low area.
Ms. Harger stated that in the early 1990s a pond was excavated in the pasture and used to train
dogs. Once the pond was created the irrigation water for the property (from the Creason Canal)
was routed through the ditches and diverted to the sediment pond and then into the pond and
eventually flowed offsite into the unnamed drainage ditch west of the property through culvert
C1. Each year irrigation water was run through the pond continually throughout the irrigation
season, from April to October. In addition to the irrigation water, she noted that the tailwater
from the agricultural field east of Black Cat Road was flushed through the property on a weekly
basis. According to Ms. Hagar, the tailwater in addition to the irrigation water, is what has
caused the pond to overflow into the low areas of the adjacent pasture surrounding the pond and
that these areas where frequently ponded during the summer and flowed to the unnamed drainage
via C2. These flows are shown in Irrigation Flow and Well Location Map in Appendix D.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 7 October 11, 2017
Current Setting
Currently the project area has an unnamed irrigation ditch/drain flowing from the northeast
corner of the property to the west and then south to the property boundary where it flows west
along the southern property boundary until it leaves the west boundary and flows through a
culvert C2 into another unnamed drain that flows along the west boundary of the property. The
irrigation and tailwater flowing through this ditch has been diverted by a plug, letting it flow into
the sediment pond and then into the manmade pond that drains through a culvert C1 to the
unnamed drainage on the western side of the pond. When the pond is full, it overflows into the
pasture south of the pond and flows into the unnamed drain west of the property through C2.
The ditch downstream from the diversion still receives some flow from the agriculture field
south of the property and pond overflow (see Appendix D).
Changes
The irrigation to the property continued until July 13, 2017 when irrigation water was cut off by
plugging the head gate located north of the property. At this time the pond was bank full. The
periodic tailwater drainage continued to flow through the site until the crops were harvested.
Monitoring
A series of five groundwater wells were installed June 2, 2017 to measure the groundwater levels
on site and an additional three wells were installed in a low area south of the pond on September
24, 2017 (See Appendix D). These wells have been monitored weekly to obtain depth to water
measurements. Monitoring will continue two weeks past the end of irrigation season. Review of
data collected from the original five wells between June 12 and September 24, 2017 shows
groundwater depths dropped in elevation between 0.48 to 1.76 feet after the irrigation water to
the site was cutoff. The depth to groundwater on September 24, 2017 for all eight wells ranged
from 2.15 to 3.9 feet below the surface (see Table 1). This drop of water level was also reflected
in the surface water in the pond. During the wetland delineation on October 2 and 3, 2017 the
surface water levels measured 1.5 to 2 feet below the shoreline. The groundwater and surface
water levels indicate that water levels dropped after the irrigation water to the property was shut
off.
Table 1. Summary Depth to Groundwater at 4355 Black Cat Road 2017.
Well
GW Below Surface (ft)
6/12/17
GW Below Surface (ft)
9/24/17
GW Level
Difference (ft)
#1 0.39 2.15 -1.76
#2 2.07 3.1 -1.03
#3 2.35 3.2 -0.85
#4 3.47 3.95 -0.48
#5 2.6 3.15 -0.55
#6 NA 2.67 NA
#7 NA 2.4 NA
#8 NA 2.29 NA
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 8 October 11, 2017
The decrease in water levels in the pond and groundwater onsite in September is important.
ACHD's stated position is that “seasonal high groundwater occurs at the end of September/first
of October for areas one or more terraces above the Boise River” (Bob Arnold, SITE
Consulting). If the wetland areas had sustained the water levels during this period, it would
have indicated the groundwater table or other natural water sources were supporting the water
levels. In addition, it should be noted that precipitation and runoff were high Ada County in
2017.
Wetland Hydrology Indicators.
Wetland hydrology indicators were observed from two periods for this project area. The first
period is before July 13, 2017 when irrigation flows were still flowing through the project area.
Wetland hydrology indicators for this period include depth to groundwater data and surface
water observations on aerial photographs from Google Earth (2017). The second period was
after July 13, 2017 when the irrigation flows were cutoff. Wetland hydrology indicators during
this period included direct observations during the site survey of surface water levels, highwater
marks and groundwater data. Aerial photographs taken during high water were used to assist in
determination of the wetland boundaries because the site vegetation was heavily disturbed by
mowing and grazing.
3.4 Soils
A review of the soils in the project area on the NRCS Web Soil Survey (2017) showed the
majority of the project area mapped with Abo silt loam, 0 to 3% and Power silt loam, 0-2%.
These soils have poor drainage. Soil indicators for wetland soils in the project area were
restricted to the shorelines, ditches and overflow areas. Primary indicators in these areas
included low chromas with redux features in soils within 12 inches of the surface.
3.5 Vegetation
The vegetation in the project area is disturbed by heavy grazing and mowing or residential
development. The upland plant communities in the project area are in a pasture and dominated
by weedy forbs and pasture grasses. Dominant plant species include kochia (Kochia scoparium),
pasture grasses (Graminae sp.), prickly lettuce (Lactuca serriola), Canada thistle (Cirsium
arvense) and cheat grass (Bromus tectorum).
The wetland communities on site are also heavily disturbed from grazing and mowing. These
communities are associated with the shore of a man-made pond, sediment pond, low areas
adjacent to the pond that receive overflow from the pond and along irrigation ditches. The
palustrine emergent (PEM) communities along the shoreline of and adjacent to the pond are
generally dominated by a variety of reed canarygrass, sedges, pasture grasses and obligate
species such as cattails and bulrushes. The ditches are dominated by cattails, willow herb, reed
canary grass and barnyard grass. The sediment pond is dominated by Arrowhead, manna grass
and hard-stem bulrush. One palustrine scrub-shrub (PSS) wetland communities was located
along the ditch along the south side and was dominated by Russian olive and Pacific Willow. A
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 9 October 11, 2017
list of dominant wetland species and their wetland indicator status observed during the field
survey are provided in Table 2.
Table 2: Dominant Wetland Plants and Indicator Status
Common Name Scientific Name Wetland Indicator Status
Carex sp.Sedge FACW
Elaeagnus angustifolia Russian-Olive FAC
Eleocharis palustris Spike-Rush OBL
Epilobium sp Willowherb FACW
Glyceria sp Manna grass OBL
Pasture grasses Graminae FAC
Phalaris arundinacea Reed Canarygrass FACW
Polygonum sp Smartweed FACW
Polypogon monospeliensis Rabbit-foot grass FACW
Sagittaria latifolia Arrowhead/Duck-Potato OBL
Salix lasiandra Pacific Willow FACW
Schoenoplectus acutus Hard-Stem Bulrush OBL
Typha latifolia Cattail OBL
4.0 WETLAND AND OPEN WATER FINDINGS
Prior to 1992, aerial photographs show the project area was a residential area with an unmanaged
upland pasture, a ditch and possibly a tailwater runoff area. The wetlands in the project area,
other than ditches and or possibly the tailwater runoff area, developed in 1992 after the pond was
excavated. Continually flowing irrigation water and agricultural tailwater were diverted through
the project areas irrigation ditches, sediment pond and the pond. Any overflow of water would
flow into low pasture areas abutting the pond. A total of 8 wetlands (W-1 through W-8) and
open water were identified in the project area during the October 2017 field survey. These
wetlands include 7 PEM communities totaling 0.81 acres, 1 PSS communities totaling 0.11 acre
and 1.21 acres of open water (Table 3). Wetland locations as well as upland areas and open
water areas are present in Figures 3. Characteristics for each wetland are discussed below.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 10 October 11, 2017
Table 3: Wetland Community Type and Acreage in Project area.
Wetland ID Wetland
Type
Wetland Square
Feet
Wetland
Acreage
W-1 PEM 9098.10 0.21
W-2 PEM 2657.50 0.06
W-3 PEM 7160.44 0.16
W-4 PEM 4062.75 0.09
W-5 PEM 5914.30 0.14
W-6 PEM 4810.68 0.11
W-7 PSS 565.55 0.11
W-8 PEM 1682.70 0.04
Total 0.92
OW 52505.33 1.21
Wetland hydrology indicators for this survey were used from prior July 13, 2017 when the
irrigation water flowed through the site unchecked and post July 13, 2017 when the irrigation
was shut off. Prior to irrigation shutoff a total of 8 wetland communities (W-1 through W-8) and
open water were identified onsite (see in Attachment 3, Figure 1). However, post July 13, 2017,
the irrigation to the site was cut off and the wetland hydrology changed. The surface water and
groundwater levels dropped and it is likely that the natural wetland hydrology will not support
these wetlands. The hydrology indicators before and after irrigation was cutoff are discussed
below for each wetland.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 11 October 11, 2017
4.1 Wetland 1
Wetland 1 (W-1) is a PEM wetland is located in the southeast corner of the project area, south of
the pond as shown in Figure 3. W-1 is 0.21 acre as shown in Table 3. This PEM community is
dominated by reed canarygrass and cattail with bulrush and yellow iris present. Soils are silty
with poor drainage and have a low chroma with mottles from 2-12 inches plus. Wetland
hydrology was present pre-July 13, 2017 as surface water shown in aerial photographs (example
see Google Earth 4/13/13). W-1 is in a slight depression in the pasture downgradient from the
pond. Hydrology in this area was sustained by high groundwater and surface water overflow
from the pond, which then flowed to culvert C2, to the unnamed drain on the west boundary of
the site, to Fivemile Creek and eventually to the Boise River.
Although there is evidence of hydrology pre- July 13, 2017, irrigation water was cut off after that
date and both surface and ground water levels have dropped in W-1 at a time when local
groundwater is supposed to be at a seasonal high. Surface water was not present in W-1 in late
August, September or early October. In addition, groundwater from three wells (Well #6, #7 and
#8) installed in W-1 ranged from 2.29 to 2.67 feet below the surface on September 24, 2017 (see
Table1). It appears that cutting irrigation water will cut the surface water overflows to W-1 and
will lower the groundwater to a depth of 2.29 feet or greater. Because surface water would no
longer overflow to the site and the water table would no longer be within 1 foot from the surface,
it is likely that permanently cutting the irrigation water off to the property would remove the
wetland hydrology from W-1.
Key hydrologic, soil, and vegetation characteristics for W-1 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 12 October 11, 2017
Table 4: Summary of Wetlands
ID #Hydrologic
Indicators Pre
7/13/17
Hydrologic
Indicators Post
7/13/17 (Irrigation
cut off), during
seasonal high GW
period
Soil Indicators Dominant Plants Notes
W-1 Surface water on
aerial photographs,
no groundwater data
Surface water not
present. Groundwater
ranges 2.29-2.6 feet
below surface.
Low chroma,
mottled soils
within 6 inches of
surface
Reed canarygrass
and cattails
Drains to culvert to
unnamed drainage to
Fivemile Creek.
W-2 Surface water on
aerial photographs,
GW in Well#3 2.35
ft below surface
Surface water 1.5-2.0
feet below shoreline,
GW in Well#3
dropped, 0.85 ft, 3.2 ft
below surface.
Low chroma,
mottled soils
within 6 inches of
surface
Spike-rush,
rabbit-foot grass,
sedges, and hard-
stem bulrush.
Drains to pond to culvert
to unnamed drainage to
Fivemile Creek.
W-3 Surface water on
aerial photographs,
no groundwater data
Surface water present,
this sediment pond
catches and any runoff
or tailwater. Pond
maintenance is due
Soils saturated
during growing
season
Manna grass,
arrowhead and
smartweed.
Flows to pond to culvert to
unnamed drainage to
Fivemile Creek.
W-4 Surface water on
aerial photographs,
high water marks, no
groundwater data,
Surface water dropped
from 1.5 to 2.0 feet,
surface water no
longer within 1 foot of
surface.
Low chroma,
mottled soils
within 6 inches of
surface
Reed canarygrass
with obligate
vegetation present
such as bulrush,
cattails, iris and
spike-rush.
Drains to pond to culvert
to unnamed drainage to
Fivemile Creek.
W-5 Surface water on
aerial photographs,
GW in Well#1 0.39
feet below surface
No surface water
present, GW in
Well#1 dropped 1.76
feet to 2.15 feet below
surface
Low chroma,
mottled soils
within 6 inches of
surface
Reed canarygrass
hard-stem bulrush
and cattails
Drains to pond to culvert
to unnamed drainage to
Fivemile Creek.
W-6 Ditch received
irrigation water and
agricultural tailwater
flows in ditch. Ditch
below diversion
receives drainage
form field to south
and pond overflows.
Irrigation water cut
off, agric. tailwater
flowed until crop
harvest, and some
overflow from field to
south. All irrigation
and tailwater is
proposed to be cut off.
Low chroma, and
saturated to the
surface.
Cattails, hard-
stem bulrush and
willow-weed
Flows to sediment pond to
pond to culvert to
unnamed drainage to
Fivemile Creek. Flows
also drain to end of ditch
and through culvert to
unnamed drainage to
Fivemile Creek.
W-7 Ditch below
diversion receives
drainage form field
and pond overflows.
Overflow from field to
south. All irrigation
and tailwater is
proposed to be cut off.
Low chroma, and
saturated to the
surface.
Russian Olive and
Pacific willow
Flows also drain to end of
ditch and through culvert
to unnamed drainage to
Fivemile Creek.
W-8 Ditch received
irrigation water and
agricultural tailwater
flows in ditch
Irrigation water cut
off, agric. tailwater
flowed until crop
harvest, and some
overflow from field to
south. All irrigation
and tailwater is
proposed to be cut off
Low chroma,
saturated to
surface
Barnyard grass Flows to sediment pond to
pond to culvert to
unnamed drainage to
Fivemile Creek.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 13 October 11, 2017
4.2 Wetland 2
Wetland 2 (W-2) is a PEM wetland that abuts the north shore of the pond as shown in Figure 3.
W-2 is 0.06 acre as shown in Table 3. This PEM community is dominated by spike-rush, rabbit-
foot grass, sedges, and hard- stem bulrush with cattail present. Soils have a low chroma with
mottles from 4-12 inches plus. Wetland hydrology was present pre-July 13, 2017 as surface
water shown in July 13, 2013 aerial photographs (Google Earth 2017). W-2 is a low area along
the north shore of the pond that was sustained by high groundwater influenced by the abutting
pond and surface water overflow from the pond, which then flowed to an unnamed drain on the
west boundary of the site to Fivemile Creek and eventually to the Boise River.
Although there is evidence of hydrology pre- July 13, 2017, irrigation water was cut off after that
date and both surface and ground water levels have dropped in the W-2 area when local the
groundwater should be at a seasonal high. Surface water was not present in W-2 in late August,
September or early October and was measured 1.5-2 feet below the shoreline. In addition,
groundwater from Well #3 nearby measured 3.2 feet below the surface (Table 1). It appears that
cutting irrigation water will cut the surface water overflows to W-2 and will lower the
groundwater to a depth in the area 1.0 feet or greater. Because surface water would no longer
overflow to the site and the water table would no longer be less than 1 foot from the surface, it is
likely that permanently cutting the irrigation water off to the property would remove the wetland
hydrology from W-2.
Key hydrologic, soil, and vegetation characteristics for W-2 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B.
4.3 Wetland 3
Wetland 3 (W-3) is a PEM associated with the sediment pond and a portion of the pond where
the sediment pond empties into the pond as shown in Figure 3. W-3 is 0.16 acre as shown in
Table 3. This PEM community is dominated by manna grass, arrowhead, and smartweed with
cattail, willow-herb bulrush and water speedwell present. Soils or sediments did not have a low
chroma (10YR3/3) or mottles, but were saturated to the surface. Wetland hydrology was present
pre-July 13, 2017 as surface water shown in July 13, 2013 and July 29, 2017 aerial photographs
(Google Earth 2017). The sediment pond and area where it empties into the pond appears to be
maintained as 2015 aerial photographs show open water in these areas and vegetation and
sediment had been removed from earlier photos (Google Earth 2017). The sediment pond, flows
to the pond which then flows to an unnamed drain on the west boundary of the site to Fivemile
Creek and eventually to the Boise River.
Irrigation was cut off on July 13, 2017 and surface and ground water levels have dropped in the
W-3 area, but surface water was still present in the sediment pond. It appears that any irrigation
or tailwater in this area would be held and released slowly because it is presently unmaintained
and is full of sediment. Since the sediment pond receives water directly from the irrigation ditch
it, cutting irrigation water will cut the surface water off to this area removing the wetland
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 14 October 11, 2017
hydrology from W-3. This sediment pond is also subject removal of wetland plants and soils
from to maintenance.
Key hydrologic, soil, and vegetation characteristics for W-1 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B.
4.4 Wetlands 4
Wetland 4 (W-4) is a PEM wetland on the shoreline of the pond as shown in Figure 3. W-4 is
0.09 acre as shown in Table 3. This PEM community is dominated by reed canarygrass with
hard-stem bulrush, spike-rush, cattail and yellow iris present. Soils have a low chroma with
mottles from 0-12 inches plus. Wetland hydrology was present pre-July 13, 2017 as surface
water up to the shore shown in July 13, 2013 aerial photographs (Google Earth 2017). This
shoreline wetland has been sustained by the surface water from the pond. The pond flows via a
culvert C1 to an unnamed drain on the west boundary of the site to Fivemile Creek and
eventually to the Boise River.
Although there is evidence of hydrology pre- July 13, 2017, irrigation water was cut off after that
date and the surface water levels in the pond have dropped 1.5-2.0 feet below the shoreline.
Because surface water is no longer within 1 foot from the surface, it is likely that permanently
cutting the irrigation water off to the property would remove the wetland hydrology from W-4.
Key hydrologic, soil, and vegetation characteristics for W-4 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B.
4.5 Wetlands 5
Wetland 5 (W-5) is a PEM wetland is located in the central portion of the pasture in the project
area, south of the pond as shown in Figure 3. W-5 is 0.14 acre as shown in Table 3. This PEM
community is dominated by reed canarygrass, cattail and bulrush with pasture grasses present.
Soils have a low chroma with mottles from 0-12 inches plus. Wetland hydrology was present
pre-July 13, 2017 as surface water shown in July 13, 2013 aerial photographs (Google Earth
2017). W-5 is a depression in the pasture downgradient from the pond that was also sustained by
high groundwater influenced by the pond. Groundwater in Well #1 was measured at 0.39 feet
below the surface in June 2017 (Table 1). Surface water overflow from the pond, which then
flowed to an unnamed drain on the west boundary of the site to Fivemile Creek and eventually to
the Boise River.
Although there is evidence hydrology pre- July 13, 2017, irrigation water was cut off after that
date and both surface and ground water levels have dropped in W-5 when local the groundwater
is supposed to be at a seasonal high. Surface water was not present in W-5 in late August,
September or early October. In addition, groundwater from Well #1 adjacent to W-5 was 2.15
feet below the surface and had dropped 1.76 feet since June (Table 1). It is likely that cutting
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 15 October 11, 2017
irrigation water will cut the surface water overflows to W-5 and will lower the groundwater to a
depth of 2.15 feet or greater. Because surface water would no longer overflow to the site and the
water table would no longer be less than 1 foot from the surface, it is likely that permanently
cutting the irrigation water off to the property would remove the wetland hydrology from W-1.
Key hydrologic, soil, and vegetation characteristics for W-5 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B.
4.6 Wetlands 6
Wetlands 6 (W-6) is a PEM wetland found along the irrigation ditch on the south side of the
property, from west of the residential area to the west side of the property as shown in Figure 3.
W-6 is 0.11 acre as shown in Table 3. This PEM community is dominated by cattail, hard-stem
bulrush and willow-weed, with reed canarygrass and teasel present. Soils have a low chroma
and were saturated to the surface. Wetland hydrology was present pre-July 13, 2017 as irrigation
water which flows continually to the upper portion of this ditch to a point where the surface
water is diverted to the sediment pond and then the pond. The diversion is a soil plug in the
ditch. The ditch below the diversion appears to receive some irrigation runoff from the field to
the south and possibly overflow from the pond but appears to be drying out. Prior to the
installation of the diversion plug, this ditch may have been used historically as a drain. Historic
aerial photographs from 1951 and 1971 show water ponding in the southwest corner of the
property before flowing off the property. The ditch historically flowed out of a culvert located in
the southwest corner of the property, but now flows out C2 to an unnamed drain on the west
boundary of the site to Fivemile Creek and eventually to the Boise River.
Although there is hydrology pre- July 13, 2017, irrigation water was cut off after that date and
the irrigation water ceased to flow in the ditch. Irrigation tailwater from the field east of Black
Cat Road continued to flow periodically, but could be rerouted to Fivemile Creek. Irrigation
overflow from the field south of the property could also be rerouted. If irrigation water is
rerouted permanently, W-6 would no longer have wetland hydrology.
Key hydrologic, soil, and vegetation characteristics for W-6 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B
4.7 Wetlands 7
Wetlands 7 (W-7) is a PSS wetland located below the diversion plug the W-6 irrigation ditch on
the south side of the property as shown in Figure 3. W-7 is 0.01 acre as shown in Table 3. This
PSS community is dominated by Russian olive and Pacific willow in the overstory with cattail,
hard-stem bulrush, willow-weed, teasel and reed canarygrass present in the herb layer. Soils
have a low chroma and were saturated to the surface. Wetland hydrology was present pre-July
13, 2017. The ditch below the diversion appears to receive some irrigation runoff from the field
to the south and possibly overflow from the pond.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 16 October 11, 2017
Although there is hydrology pre- July 13, 2017, irrigation overflow from the field south of the
property could be rerouted. If irrigation water is rerouted permanently, W-7 would no longer
have wetland hydrology.
Key hydrologic, soil, and vegetation characteristics for W-7 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B
4.8 Wetlands 8
Wetland 8 (W-8) is a PEM wetland found along the irrigation ditch north of the residential area
near Black Cat Road as shown in Figure 3. W-8 is 0.04 acre as shown in Table 3. This PEM
community is dominated by barn yard grass with sedges and smartweed present. Soils have a
low chroma with mottles from 10-12 inches plus. Wetland hydrology was present pre-July 13,
2017 as irrigation water which flows continually during irrigation season and irrigation tailwater
from the agricultural field on the east side of Black Cat Road. The ditch flows to the sediment
pond W-3 and then the pond which flows via a culvert C1 to an unnamed drain on the west
boundary of the site to Fivemile Creek and eventually to the Boise River.
Although there is hydrology pre- July 13, 2017, irrigation water was cut off after that date and
the irrigation water ceased to flow in the ditch. Irrigation tailwater from the field west of Black
Cat continued to flow periodically, but could be rerouted to Fivemile Creek. If irrigation water is
rerouted permanently, W-8 would no longer have wetland hydrology.
Key hydrologic, soil, and vegetation characteristics for W-8 are summarized and presented in
Table 4. Individual data sheets are included in Appendix B
4.9 Open water
Open water was present in the pond. The June 29, 2017 aerial photograph (Google Earth 2017)
showed 1.21 acre of open water.
UPLANDS
Uplands in the project area were located abutting the irrigation ditches, sediment pond, pond and
low pasture areas and were separated from the wetlands where there were no longer any wetland
hydrology indicators. Generally, the slopes along the ditches were pronounced rising steeply
from 1 foot to 5 feet above the water. Aerial photographs showing high water and saturation
were used to define the upland and wetland boundaries. In some areas the loss of obligate
vegetation with a slight rise in topography were used. The upland communities on site are
described below.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 17 October 11, 2017
4.10 Upland 1
Upland 1 (UPL-1) is a heavily grazed and mowed pasture located on southwest of the pond
(Figure 3). These uplands bound W-1 and W-5 which are located in a slight depressions or low
areas near the pond.
UPL-1 is dominated by pasture grasses and Canada thistle and noticeably lacks obligate wetland
vegetation found in the adjacent wetlands. Soils are 10YR3/2 with redox features starting at 10
inches. This area is slightly higher than the abutting wetlands. A July 13, 2013 aerial photograph
(Google Earth 2017) was used to differentiate the uplands for wetlands. Individual data sheets
are included in Appendix B.
4.11 Upland 2
UPL-2 is located on the northside of the pond shown in Figure 3. This area is dominated by
kochia, prickly lettuce and cheatgrass which are considered upland or facultative upland plants.
Soils did not have low chromas or redox features. No hydrology was noted in this area.
Individual data sheets are included in Appendix B.
4.12 Upland 3
Upland 3 (UPL-3) is an upland area west of the sediment pond. Upland 1 (UPL-1) is a heavily
grazed and mowed pasture located on southwest of the pond (Figure 3). These uplands bound W-
3 the wetlands which are associated with the sediment pond and W-4 the shoreline of the pond.
UPL-3 is dominated by pasture grasses and prickly lettuce with Canada thistle present. Soils are
10YR4/3 and 10YR3/3 with redox features starting at 10 inches. This area is slightly higher than
the abutting wetlands. No hydrology indicators were identified. An July 13, 2013 aerial
photograph during high water was used to differentiate the uplands for wetlands. Individual data
sheets are included in Appendix B.
5.0 DISCUSSION
A discussion with the property owner and review of historical aerial photographs of the project
area found that the sediment pond and pond associated with wetlands were man made in upland
areas and maintained at various times since construction in 1992. There is an area in the
southwest corner of the property that collected irrigation runoff on 1951 and 1971 aerial
photographs. These areas were not visible in the 1939 and 1954 aerial photographs.
Once the ponds were constructed irrigation water and agricultural tailwaters were diverted to
provide water to the site. The irrigation water filled the sediment pond and pond, and
overflowed into low areas abutting the pond. These waters provided wetland hydrology to the
site which in turn created hydric soils and allowed wetland vegetation to grow. These conditions
were viewed on aerial photographs (Google Earth 2017) and during the field survey.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 18 October 11, 2017
On July 13, 2017 the irrigation water was cut off from the site. Consequently, the surface water
and groundwater levels dropped below levels that are considered able to support wetland
hydrology. Normally during this period it is considered to be the seasonal high groundwater
period on the terraces above the Boise River. The decline of these water levels has occurred
during a year of high runoff in the region and in an area that has silt soils that drain slowly. In
late September and early October, the surface water levels were 1.5 to 2 feet below the shoreline
and groundwater levels a minimum 2.15 feet below the surface. The property owner plans to cut
all irrigation flows to the site and reroute any agricultural drainage. Permanently cutting off the
irrigation and tailwater could affect the site as follows:
Wetlands associated with irrigation ditches (W-6, W-7 and W-8).Permanently shutting
off the irrigation water would cut off the source of surface water to the ditches and there
would no longer be wetland hydrology.
Shoreline wetlands (W-4).The water levels in the pond have dropped 1.5 to 2 feet below
the shoreline since irrigation water has been cut off. If irrigation water is shut off
permanently surface water levels would likely continue to decline or remain at 1.5 to 2
feet below the shore and would no longer sustain W-4 wetland hydrology.
Low areas abutting pond (W-1, W-2 and W-5).Presently the water levels have dropped
1.5 to 2 feet below the shoreline of the pond. Without irrigation water and tail water
flowing, the pond would likely no longer overflow and the groundwater would likely
remain greater than 2 feet below the ground surface. Consequently, these areas would no
longer support wetland hydrology.
Sediment Pond Wetland (W-3).The sediment pond retained wetland hydrology during
the site visit. This area is overgrown and filled with silt and likely will hold water for a
period of time as it would fill with any recently collected rainwater or tailwater. This
pond will probably dry out slowly over time. Based on aerial photographs from 2015,
the pond is full of sediment and is due to be cleaned.
In conclusion, the site was an upland prior 1992. In 1992 the hydrology of the site was changed
by excavating a pond and rerouting irrigation water and agricultural tailwater through the pond
system and resulted in the creation of Wetlands W-1 through W-8. The irrigation was shutoff on
July 13, 2017 and water levels have dropped significantly since that date. Site information from
before the irrigation shutoff date shows wetland hydrology was present onsite and was
supporting Wetlands 1-8. However, surface water observations and groundwater data post
irrigation shutoff show cutting the irrigation to the site has influenced the hydrology onsite.
The only other potential source of water in the area is groundwater. Since the historical aerial
photograph show the site was an upland, it is not likely that groundwater would support wetlands
on site. However, if groundwater were to support wetlands onsite it would be in the vicinity of
Well #1 and W#8 where the groundwater was closest to the surface at depths of 2.15 and 2.29
feet below the surface during seasonal high groundwater in the region. To support wetland
hydrology the water table would need to be within one foot of the surface.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 19 October 11, 2017
6.0 SUMMARY
Prior to 1992, aerial photographs show the project area was a residential area with an unmanaged
upland pasture, a ditch and possibly a tailwater runoff area. The wetlands in the project area,
other than the ditches and or possibly a tailwater runoff area, developed after 1992 when the
pond was excavated. Continually flowing irrigation water and agricultural tailwater were
diverted through the project areas irrigation ditches, sediment pond, and the pond. Any overflow
of water would flow into low pasture areas abutting the pond. Eight wetlands, 7 PEM and 1 PSS
wetlands were delineated in the project area. The delineation was conducted during a high
runoff year in the Ada County area. The project area includes a total of 0.92 acres of wetlands,
including 0.81 acre of PEM and 0.11 acre of PSS along with 1.21 acre of open water (Table 3).
The wetlands and open water in the project area are shown in Figures 3. The wetlands in the
project area likely to rely on irrigation and agriculture irrigation tailwater for hydrology. When
irrigation to the site was cutoff on July 13, 2017 surface and groundwater levels dropped
significantly and wetland hydrology has been lost. Groundwater monitoring onsite shows the
closest the water table is to the surface during seasonal highwater is 2.15 feet below grade at
Well #1. Generally, the water table or saturation would be required to be within 1 foot of the
surface before a site is considered to have wetland hydrology and be considered a wetland. The
U.S. Army Corps of Engineers will make final jurisdictional decisions regarding the wetlands in
the project area. All waters flow to the unnamed drain west of the site, to Fivemile Creek and
onto the Boise River.
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 20 October 11, 2017
7.0 REFERENCES
Berglund, Jeff and Rich McEldowny. 2008.Montana Wetland Assessment Method. Prepared for
Montana Department of Transportation and Morrison-Maierle, Inc., Helena, Mont.
Cowardin, L.M., Carter V., Golet F.C., and LaRoe E.T. 1979.Classification of Wetlands and
Deepwater Habitats of the United States. FWS/OBS-79/31. U.S. Fish and Wildlife
Service.
Environmental Laboratory. 1987.Corps of Engineers Wetlands Delineation Manual.Technical
Report Y-87-1. U.S. Army Corps of Engineers Waterways Experimental Station,
Vicksburg, Miss.
Environmental Laboratory. 2008.Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Arid West Region (Version 2.0).Technical Report ERDC/EL TR-
06-16. U.S. Army Engineer Research and Development Center.
Federal Interagency Committee for Wetland Delineation. 1989.Federal Manual for Identifying
and Delineating Jurisdictional Wetlands.U.S. Army Corps of Engineers, U.S.
Environmental Protection Agency, U.S. Fish and Wildlife Service, and U.S. Department
of Agriculture Soil Conservation Service, Washington, D.C. Cooperative technical
publication.
Google Earth. 2017. Aerial photograph of project site. URL http://www. http://earth.google.com
(September 2017).
Idaho Department of Environmental Quality (IDEQ) 2016.Landscape Plumbing: Mapping the
Water of the Treasure Valley.URL http://www.deq.idaho.gov/assistance-resources/conferences-
trainings/2016-monitoring-workshop/(Google Earth map file).
Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016.The National Wetland Plant
List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28
Munsell Soil Color Charts. 1992. Kollmorgen Corporation. Baltimore, Md.
National Agriculture Image Program(NAIP). 2015. Imagery, 1-meter resolution, 2015
NRCS. 2017.Soil Survey, of Ada County Idaho.United States Department of Agriculture. Web
Soil Survey. Available online at http://websoilsurvey.nrcs.usda.gov/ accessed [September
2017].
USFWS (U.S. Fish and Wildlife Service). 2017.National wetland inventory maps for Ada
County.URL http://www.nwi.fws.gov (visited September 2017).
4335 Black Cat Road
Rapid Creek Subdivision
Wetland Delineation 21 October 11, 2017
US Army Corps of Engineers. 2014.National Wetland Plant List, Arid West.
http://rsgisias.crrel.usace.army.mil/NWPL/(Visited September 2017)
USFWS (U.S. Fish and Wildlife Service). 2014.National Wetland Inventory Map.URL
http://www.nwi.fws.gov/viewer (visited July 2017).
United States Department of Agriculture, Farm Service Agency, Aerial Photography Field
Office. 2015.Digital Orthoimagery Series of Idaho.
United State Geological Survey (USGS). 2017. U.S. Geological Survey 1: 24,000 Topographic
Maps for the Star Quadrangle.
.
Appendix A
Historical Aerial Photographs
1954
Appendix B
Wetland Delineation Data Sheets
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID W-1
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
x x
Remarks: These wetland communities have been associated with irrigation water that supplied a pond. The irrigation water has been shut down and
the water levels have dropped. The vegetation in the project area has been mowed and grazed.
Phalaris arundinacea 30 x FACW
Typha latifolia 45 x OBL
Sciprus acutus P OBL
Iris psuedacorus P OBL
Unk pasture grass 20 x FAC
95
3
3
100
X
The vegetation in this area has been mowed and grazed. This is a low area in a pasture dominated by reed canarygrass, cattails, pasture
grasses with bulrushes and yellow iris present. Assume reed canary grass based remnant infloresence. Other pasture grassed mixed in. This wetland
area was differentiated based on the obligate plants present.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-1
0-2 10YR2/1 Silt with roots
2-15 10YR3/2 10 RM PL Clayey silt some sand
15-20 10YR3/2 10 RM PL Sandy silt
20-22 10YR4/3 Sand
X
x
Redox features within 6 inches of surface
X
X
6-12 X
Pre 7/13/17 - Surface water is visible on 4/23/13 google earth satellite imagery. Some obligate vegetation present.
Post 7/13/17 – Surface water was not present, ground water in three wells located within W-1 ranged from 2.29 to 2.67 feet below the surface.
Indicates GW is 2 ft below grade during the season when groundwater is generally the highest on terraces above Boise River.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID W-2
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
x x
Remarks: These wetland communities have been associated with irrigation water that supplied a pond. The irrigation water has been shut down and
the water levels have dropped. The vegetation in the project area has been mowed and grazed.
Eleocharis palustris 50 X OBL
Polypogon monspeliensis 15 X FACW
Carex sp 15 X FACW
Schoenoplectus acutus 15 X OBL
Typha latifolia P OBL
95
4
4
100
X
Low area adjacent to pond, extended shoreline.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-2
0-4 10YR2/1 Silt with roots
4-15 10YR3/1 5 RM PL Silt
x
x
Redox features within 6 inches of surface
X
X
6-12 X
Pre- July 13, 2017 irrigation water cutoff. Low area along shoreline. Surface water is visible on 4/23/13 aerial photograph. Well# 3 depth to
water 2.35 feet
Post July, 13, 2017, Estimate surface water in pond is 1.5-2 feet below W-2. Well #3 depth to water 3.2 feet.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID W-3
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: This wetland is in a sediment bay for irrigation water prior to it entering the pond. This area has been maintained in the past. This wetland is
subject grazing.
Glyceria sp 30 X OBL
Polygonum sp 30 X FAC
Sagitaria latifolia 25 X OBL
Schoenoplectus acutus 10 OBL
Typha latifolia P OBL
Epilobium species 5
Veronica anagallis-aquatica P OBL
95
4
4
100
X
Sediment pond and shoreline and area where the pond flows into the main pond. Does not include pond shoreline. Areas dominated by
Larger areas on pond dominated by Sagitarria.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-3
0-12 10YR3/3 Silt Saturated to surface
x
Assumed hydric, saturated to surface.
X
X
8”
to surface X
Pre 7/13/17 6/29/17 aerial photograph shows that surface water in sediment pond along with vegetation. In the pond the area where the
sediment pond empties into the pond shows some wetlands and is primarily surface water. The 6/29/17 aerial was used to map the wetlands in this
area. The 4/23/13 aerial photograph shows the sediment pond and the mouth area are clear of vegetation indicating probably maintenance or removal
of sediment.
Post 7/13/17 There was water present in the sediment pond. It appears any tailwater or other would collect here . The area in the mouth of the pond
was dominated by emergent vegetation (arrowhead)
1.5 ft break in topography from sediment pond to upland.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID W-4
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: Low area adjacent to pond, mowed and grazed.
Phalaris arundinacea 60 X FACW
Schoenoplectus acutus 15 X OBL
Typha latifolia 15 X OBL
Pasture grasses UNK FAC
95
3
3
100
X
Low area adjacent to pond, obligate vegetation is present. Similar to W-1. Grass is mowed and grazed to 3 inches. Topography, water on
aerial photography 4/23/13 and change in vegetation and loss of obligate vegetation used to id upland boundary.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-4
0-12 10YR2/2 RC 10 Silt Silt with some small 0.25” gravel
12-15 10YR3/2 RC 10 Silt some sand
15-20 10YR4/2 RC 10 Silt w sand
x
Assumed hydric due to redox concentrations and water in aerial photo 4/23/17.
X X
X
X
Pre 7/13/17 Surface water is visible on 4/23/13 aerial photograph. W#1 on June 12 0.39 ft below grade.
Post 7/13/17 surface water not present,W#1 depth to water 2.15 ft on September 24, 2017.
This is a low areas that likely ponds water overflowing pond during high irrigation flows. Moisture showing in pit previous soil pit at 15 inches. Water
depth greater 2 feet.
High water mark present.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion,RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/3/17
Trilogy Development ID W-5
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: Shoreline around pond, mowed and grazed.
Phalaris arundinacea 70 X FACW
Schoenoplectus acutus 5 OBL
Typha latifolia 5 OBL
Eleocharis palustris 10 OBL
Iris psuedacorus P OBL
95
1
1
100
X
Shoreline around pond dominated by reed canarygrass, with obligate species present. Shoreline community is averages 1.5 feet in width
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-5
0-12 10YR2/2 RC 10 Silt Silt with some small 0.25” gravel
12-15 10YR3/2 RC 10 Silt some sand
15-20 10YR4/2 RC 10 Silt w sand
x
Assumed hydric due to redox concentrations and water in aerial photo 4/23/17.
X
X
X
Pre 7/13/17 Surface water is visible on 6/29/17 aerial photograph to shoreline.
Post 7/13/17 During the site visit the surface water was 1.5 to 2.5 feet below the shoreline.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/3/17
Trilogy Development ID W-6
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: An irrigation ditch flows east to west across the property. W-6 represents the western 65% of this ditch, W-7 represents the east 35% of
this ditch. W-6 is subject to grazing.
Salix lasiandra P FACW
Typha latifolia 30 X OBL
Schoenoplectus acutus 30 X OBL
Epilobium sp 30 X FACW
Dipsacus fullonum P FAC
Phalaris arundinacea 5 FACW
95
3
3
100
X
Irrigation ditch with wetland vegetation in channel. Upland on north is berm with Upl-2 vegetation and on south an agricultural field.
Ditch is subject to grazing.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-6
0-2 10YR2/2 Silt
2-12 10YR3/1 Silt
x
Assumed hydric saturate to surface.
X
X
8 inches
surface X
This ditch receives irrigation water and tailwater from the ag field west of Black Cat Road. Its diverted into a sediment pond and to the pond.
The ditch below the diversion appears to receive irrigation water from the ag field south of the property and possibly from overflow from the pond.
Pre 7/13/17 Surface water is visible on 6/29/17 aerial photograph in ditch.
Post 7/13/17 During the site visit the saturation was present and water at 8” in the pit, this was a low area in the ditch. Most of the ditch west of the pit
was dry. Western portion of the ditch drier then central area. Ditch is 5 feet wide and 2-2.5 feet deep.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/3/17
Trilogy Development ID W-7
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: An irrigation ditch flows east to west across the property. W-6 represents the western 65% of this ditch, W-7 represents the east 35% of
this ditch. W-6 is subject to grazing.
Salix lasiandra 30 X FACW
Elaeagnus angustifolia 70 X FAC
Typha latifolia 5 OBL
Schoenoplectus acutus 5 OBL
Epilobium sp 5 FACW
Dipsacus fullonum P FAC
Phalaris arundinacea 5 FACW
95
2
2
100
X
Irrigation ditch with wetland vegetation in channel. Upland on north is berm with Upl-2 vegetation and on south an agricultural field.
Ditch is subject to grazing. Shrubs located adjacent to ditch. Some are burned from ditch maintenance.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-7
0-2 10YR2/2 Silt
2-12 10YR3/1 Silt
x
Assumed hydric.
X
X
8 inches
surface X
This ditch receives irrigation water and tailwater from the ag field west of Black Cat Road. Its diverted into a sediment pond and to the
pond. The ditch below the diversion appears to receive irrigation water from the ag field south of the property and possibly from overflow from the pond.
Pre 7/13/17 Surface water is visible on 6/6/14 aerial photograph in ditch.
Post 7/13/17 During the site visit the saturation was present and water at 8” in the pit, this was a low area in the ditch. Most of the ditch west of the pit
was dry. Western portion of the ditch drier then central area. Ditch is 5 feet wide and 2-2.5 feet deep
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/3/17
Trilogy Development ID W- 8 ditch
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
x
x
X x
Remarks: An irrigation ditch flows east to west across the property. W-6 represents the western 65% of this ditch, W-7 represents the east 35% of
this ditch. W-6 is subject to grazing.
Echinocloa crus-gali 80 X FACW
Polygonum sp P FACW
Cyperus sp. P FACW
Carex sp FACW
95
3
3
100
X
Irrigation ditch with wetland vegetation in channel.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
W-8
0-4 10YR4/1 Silt w small gravels
4-10 10YR4/1 Silt
10-15 10YR4/1 70 RM M Sandy silt
x
Assumed hydric saturate to surface.
X
X
8 inches
surface X
Surface water is visible on 6/29/17 aerial photograph in ditch . Saturated to surface. Ditch 3 feet wideX1.5 feet depth.
Pre 7/13/17 Property received irrigation water continually during irrigation season via this ditch, it also receives irrigation tailwater from ag. field on west
side of Black Cat Road via culvert under road.
Post 7/13/17 Irrigation water was cut off to the ditch/property. Tailwater from irrigation continued until crops were harvested.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID U-1
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
X
X
X X
Remarks: Adjacent wetland communities have been associated with irrigation water that supplied a pond. The irrigation water has been shut down and
the water levels have dropped. The vegetation in the project area has been mowed and grazed.
Cirsium arevense 20 X FACU
Unknown pasture grass 80 X FAC
95
1
1
50
80 240
20 80
100 320
3.2
X
The vegetation in this area has been mowed and grazed. This is area is abuts W-1 which is visually lower then U1. It also lacks obligate
vegetation identified in W1 and has FACU plants. No seed heads were located for grass.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
U-1
0-3 10YR3/2 Silt with roots
3-10 10YR3/2 Silt some roots
10-18 10YR3/1 10 RM PL Silty clay
x
Redox features are not within 6 inches of surface
X
Surface water is not visible on 4/23/16 aerial photograph. This area is approximately 1’ higher then W-1.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID U-2
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
X
X
X X
Remarks: Adjacent to wetland communities have been associated with irrigation water that supplied a pond. The irrigation water has been shut down
and the water levels have dropped. The vegetation in the project area has been mowed and grazed.
Kochia scoparia 60 X UPL
Lactuca serriola 15 X FACU
Bromus tectorum 15 X UPL
90
3
0
0
X
U-2 is dominated by primarily by kochia
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
U-2
0-6 10YR3/2 Sandy silt
6-12 10YR5/3 Sand w rock Pit run
x
No wetland features
X
MW-3 well data shows water at 2.9 feet.b
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
4435 Black Cat Road Meridian/Ada 10/2/17
Trilogy Development ID U-3
DK/SH The Wetlands Group T04N, R01W Section 33
Alluvial Terrace 80’ above Boise R.Level 0-3
LRR B 43.644543 -116.455955
Abo Silt Loam, 0-3 % Slope No
X
x x x x
X
X
X X
Remarks: Adjacent to wetland communities have been associated with irrigation water that supplied a pond. The irrigation water has been shut down
and the water levels have dropped. The vegetation in the project area has been mowed and grazed.
Lactuca serriola 50 X FACU
Cirsium arvense 10 FACU
Unknown Pasture grass 40 X FAC
2
1
0
40 120
60 240
100 360
3.6
X
U-3 is upland adjacent to sediment pond, 18 inch break in topography from W-3 sediment pond. Area is heavily grazed and mowed.
WETLAND DETERMINATION DATA FORM – Arid West Region
Project/Site:City/County:Sampling Date:
Applicant/Owner:State:Sampling Point:
Investigator(s):Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none):Slope (%):
Subregion (LRR): Lat:Long:Datum:
Soil Map Unit Name:NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.)
Are Vegetation ,Soil , or Hydrology significantly disturbed?
naturally problematic?
Are “Normal Circumstances” present? Yes No
Are Vegetation ,Soil , or Hydrology (If needed, explain any answers in Remarks.)
SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.
Hydrophytic Vegetation Present?
Hydric Soil Present?
Wetland Hydrology Present?
Yes No
Yes No
Yes No
Is the Sampled Area
within a Wetland?Yes No
VEGETATION – Use scientific names of plants.
Tree Stratum (Plot size:)
1.
2.
3.
4.
Total Cover
Sapling/Shrub Stratum (Plot size:)
1.
2.
3.
4.
5.
Total Cover
Herb Stratum (Plot size:)
1.
2.
3.
4.
5.
6.
7.
8.
Total Cover
Woody Vine Stratum (Plot size:)
2.
Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust
Absolute Dominant Indicator
% Cover Species? Status
That Are OBL, FACW, or FAC:(A)
Total Number of Dominant
Species Across All Strata:(B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:(A/B)
Dominance Test worksheet:
Number of Dominant Species
Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals:(A)(B)
Prevalence Index = B/A =
Prevalence Index worksheet:
Total % Cover of:
Dominance Test is >50%
Prevalence Index is ≤3.01
Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Hydrophytic Vegetation Indicators:
Hydrophytic
Vegetation
Present?Yes No
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
U-3
0-6 10YR4/3 Silt
6-10 10YR3/3 Silt
10-16 10YR4/3 1 RM M Silt
x
No wetland features
X
X
X X
18 inches above W-3, which has water 8 inches below surface.
SOIL Sampling Point:
Depth Matrix Redox Features
(inches)Texture Remarks%Color (moist)Color (moist)%Type1 Loc2
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.)Indicators for Problematic Hydric Soils3
Histosol (A1)Sandy Redox (S5)1 cm Muck (A9) (LRR C)
Histic Epipedon (A2)Stripped Matrix (S6)2 cm Muck (A10) (LRR B)
Black Histic (A3)Loamy Mucky Mineral (F1)Reduced Vertic (F18)
Hydrogen Sulfide (A4)Loamy Gleyed Matrix (F2)Red Parent Material (TF2)
Stratified Layers (A5) (LRR C)Depleted Matrix (F3)Other (Explain in Remarks)
1 cm Muck (A9) (LRR D)Redox Dark Surface (F6)
Depleted Below Dark Surface (A11)
Thick Dark Surface (A1 2)
Sandy Mucky Mineral (S1)
Sandy Gleyed Matrix (S4)
Depleted Dark Surface (F7)
Redox Depressions (F8)3Indicators of hydrophytic vegetation and
wetland hydrology must be present,
unless disturbed or problematic.
Vernal Pools (F9)
Type:
Depth (inches):
Restrictive Layer (if present):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Primary Indicators (minimum of one required; check all that apply)Secondary Indicators (2 or more required)
Surface Water (A1)Salt Crust (B11)Water Marks (B1) (Riverine)
Sediment Deposits (B2) (Riverine)
Drift Deposits (B3) (Riverine)
Drainage Patterns (B1 0)
Dry-Season Water Table (C2)
High Water Table (A2)Biotic Crust (B12)
Saturation (A3)Aquatic Invertebrates (B13)
Water Marks (B1) (Nonriverine)
Sediment Deposits (B2) (Nonriverine)
Drift Deposits (B3) (Nonriverine)
Surface Soil Cracks (B6)
Hydrogen Sulfide Odor (C1)
Oxidized Rhizospheres along Living Roots (C3)
Presence of Reduced Iron (C4)
Recent Iron Reduction in Tilled Soils (C6)
Thin Muck Surface (C7)
Other (Explain in Remarks)
Crayfish Burrows (C8)
Saturation Visible on Aerial Imagery (C9)
Shallow Aquitard (D3)
FAC-Neutral Test (D5)
Inundation Visible on Aerial Imagery (B7)
Water-Stained Leaves (B9)
Wetland Hydrology Indicators:
Surface Water Present?Yes No Depth (inches):
Water Table Present?Yes No Depth (inches):
Saturation Present?Yes No Depth (inches):
Field Observations:
Wetland Hydrology Present? Yes No
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
US Army Corps of Engineers Arid West – Version 2.0
#*#*
#*
#*
#*
#*
#*
#*
#*
#*
#*#*
#*
#*
#*
!(
!.
!(!.
!.
!.
!.
!(
!.
!(!.
!.
!(
P1
P2
P3
P4
P8
P7P9
P6
P5
P15
P13
P14
P12
P10
P11
W-7 SOIL PIT
W-3 SOIL PIT
W-2 SOIL PIT
W-5 SOIL PIT
W-4 SOIL PIT
W-6 SOIL PIT
W-4 SOIL PIT
W-1 SOIL PIT
UPL-3 SO IL PIT
UPL-2 SO IL PIT
UPL-1 SO IL PIT
UPL-1 SO IL PIT
UPL-2 SO IL PIT
0 200100 Feet
´
Soil Pit andPhoto Point Location Map NN W N o:Waterbody: Riv er M ile : Loc ation: M erid ian , A da, Ida hoApplicant: The We tla nds G rou p SheetDate: 201 7
4435 Black C at R oadRapid Creek Subdivis ion
100 South Star Ro ad, Su ite 112Star, ID . 83669Office: (208) 375-53 73
!(UPLA ND S OI L PI T
!.WETLAN D SO IL PIT
#*PH OTO PO IN TS
PR OJE CT BO UN DA RY
WETLAND TYPE
PEM
PSS
UPLA ND
OPEN WAT E R
RESI DE NT IA L
Appendix C
Photographs
(September/October 2017)
Photograph 1: Looking east at W-1 a low area with obligate wetland vegetation that receives
overflow from pond when irrigation flows increase.
Photograph 2: Looking west at W-2, a low area that receives pond overflow.
Photograph 3: Looking at W-3, a sediment basin located just east of the pond.
Photograph 4-Wetlands 3 formed on eastside of pond on sedimnent released from sediment
pond.
Photograph 5: Looking north at W-4, a narrow PEM wetlands along highwater mark of pond.
Photograph 6: Looking east at Wetland 5 a PEM located in low area adjacent to the shoreline.
Photograph 7: Looking east at Wetland 6 an irrigation ditch.
Photograph 8: Looking west at Wetland 6, this lower section appears to be drying.
Photograph 9: Looking south at W-6 foreground W-7 background.
Photograph 10: Looking west at Wetland 8 with landscaped residential area on right.
Photograph 11: Upland 1 in foreground.
Photograph 12: Looking north at Upland 2.
Photograph 13: Looking southwest at Upland 3, W-3 in foreground.
Photograph 14: The site is heavily grazed.
Photograph 15: Pond culvert with cleanout has recently replaced previous structure that was
controlled by boards.
Appendix D
Irrigation Flow and Well Location Map
"JD
!?
!!R
!!R
!!R
!!R
!!R
!!R
!!R!!R
##
#
##
#
W#8
W#7
W#4
W#3
W#2
W#1
W#5
W#6
Plu gg ed 7/1 3/2 01 7
´
0 12 562.5 Fe et
"JD Irri gatio n Head gate
!?Di versio n Pl ug
!!R Well Lo cation s
Overflo w Areas
Intermi ttent F low
Flow Di rection
Ag ricultura lTailwater
Un na me d Drainage
FiveMileCreek
C 1C2
We ll Locations andIrrigation Flow Ma p