GRTE_149677_Moose_Water_Wetlands_Report.pdf

WETLAND DELINEATION REPORT

GRAND TETON NATIONAL PARK

WATERLINE IMPROVEMENTS

(MOOSE, WYOMING)

Prepared in Support of a Project to Address Critical Moose Water

System Deficiencies PMIS #GRTE 149677

September 2014

Printed on recycled paper iii

ABSTRACT

Louis Berger, under contract to the National Park Service, conducted a wetland delineation in support of proposed improvements to the failing waterline-related infrastructure at Grand Teton National Park, Moose, Wyoming.

Jurisdictional wetlands were identified using criteria outlined in the U.S. Army Corps of Engineers Wetland Delineation Manual, and established in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). Wetlands delineated on the property were characterized by a dominance of hydrophytic vegetation, the presence of hydric soil indicators, and evidence or the presence of wetland hydrology. Wetlands were also classified under the Classification of Wetlands and Deepwater Habitats of the United States, per National Park Service guidelines.

Field surveys within and adjacent to the study area identified seven jurisdictional wetlands. Also, 11 other areas that qualified as wetlands under NPS guidelines were identified, and seven of these natural areas also qualify as OWUS under USACE guidelines, for a total of 18 areas. The 18 delineated wetland areas account for 4.961 acres in and immediately adjacent to the study area. Of these acres, 0.06 acre of USACE jurisdictional wetlands occur within the limits of disturbance (project area), and 0.08 acre of NPS/OWUS wetlands occur in the project area.

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CONTENTS

ABSTRACT iii

INTRODUCTION 1

Background 1

Study Area Description 1

Proposed Project Description 1

AREA ENVIRONMENTAL BACKGROUND 5

Geology and Geomorphology 5

Soils 5

Water Resources 6

Ecoregion 6

WETLAND DELINEATION 7

Introduction 7

Methodology 8

RESULTS 11

WETLAND DESCRIPTIONS 11

Pond-NPS2 11

Pond-NPS3 15

RK-D1-Wet1 16

Riverine Bank 3 and Riverine Area 3 17

BM-D1-Wet2 18

Riverine Bank 4 and Riverine Area 4 21

RK-A1-Wet1 and Riverine Area 2 22

BM-A1-Wet2 and Riverine Area 2 23

BM-B1-Wet1 and Riverine Area 1 25

BM-NPS1 26

RK-C1-Wet1 27

Riverine Bank 1 and 2 30

RK-E1-Wet1 34

CONCLUSION 37

REFERENCES 39

LIST OF PREPARERS 43

LIST OF TABLES

Table 1: Wetland/Stream Characteristics: Moose Waterline 12

LIST OF FIGURES

Figure 1. Project Vicinity 2 vi

Figure 2. Project Area Overview 3

Figure 2A. Delineated Wetlands 14

Figure 2B. Delineated Wetlands 18

Figure 2C. Delineated Wetlands 26

Figure 2D. Delineated Wetlands 29

Figure 2E. Delineated Wetlands 30

Figure 3 Snake River Gage Height 31

Figure 4 Snake River Discharge 32

LIST OF PHOTOS

Photo 1: Pond-NPS2 (Southwest View) 15

Photo 2: Pond-NPS3 (South View) 15

Photo 3: RK-D1-Wet1 (Wetland Soil Pit) 16

Photo 4: RK-D1-Wet1 (Upland Soil Pit) 17

Photo 5: Riverine Bank 3 is on the Right/South Side of Taggart Creek (Riverine Area 3) 18

(Southeast View From Pedestrian Trail Bridge) 18

Photo 6: BM-D1-Wet2 (Northwest View) 20

Photo 7: BM-D1-Wet2 (Wetland Test Pit) 20

Photo 8: BM-D1-Wet2 (Upland Test Pit) 20

Photo 9: Riverine Bank 4 (North View from Vehicle Bridge) 21

Along the Western (left) Bank of an Unnamed North Tributary to Taggart Creek 21

Photo 10: RK-A1-Wet1 and Riverine Area 4 (North View from Vehicle Bridge) 22

Photo 11: RK-A1-Wet1 and Riverine Area 2 (South View from Vehicle Bridge) 22

Photo 12: RK-A1-Wet1 (Wetland Test Pit) 23

Photo 13: RK-A1-Wet1 (Upland Test Pit) 23

Photo 14: BM-A1-Wet2 and Riverine Area 2 (South View from Vehicle Bridge) 24

Photo 15: BM-A1-Wet2 (Wetland Test Pit) 24

Photo 16: BM-A1-Wet2 (Upland Test Pit) 25

Photo 17: BM-B1-Wet1 (South View from Wetland Edge) 25

Photo 18: BM-B1-Wet1 (Wetland Test Pit) 26

Photo 19: BM-B1-Wet1 (Upland Test Pit) 26

Photo 20: BM-NPS1 (Outlined in Red; Northwest View) 27

Photo 21: RK-C1-Wet1 (Northern Edge, East View) 29

Photo 22: RK-C1-Wet1 (Northern Edge, West View From Culvert) 29

Photo 23: RK-C1-Wet1 (Southern Edge, East View) 29

Photo 24: RK-C1-Wet1 (Wetland Test Pit) 30

Photo 25: RK-C1-Wet1 (Upland Test Pit) 30

Photo 26: Snake River Top of Bank 1 (Southeast View) 33

Photo 27: RK-E1-Wet1 (Northwest View) 35 vii

Photo 28: RK-E1-Wet1 (Wetland Test Pit) 35

LIST OF APPENDICES

APPENDIX A WETLAND FUNCTIONAL ASSESSMENTS

APPENDIX B WETLAND DETERMINATION DATA FORMS

APPENDIX C PLANT SPECIES OBSERVED

INTRODUCTION

BACKGROUND

Louis Berger, under contract to the National Park Service (NPS), conducted a wetland delineation in response to the proposed improvements to the failing waterline-related infrastructure at Grand Teton National Park (GRTE) Headquarters, Moose, Wyoming.

As part of compliance for the proposed improvements, wetland functions were assessed to help unavoidable wetland impacts as required by the U.S. Army Corps of Engineers (USACE) for Section 404 permits and by the NPS for compliance with Director -1 (DO 77-1):

Wetland Protection (NPS 2002). A wetland delineation was conducted during the week of June 22, 2014, to document any wetlands within the study area.

The following sections provide:

a description of the project area and study area (Figures 1 and 2) a general geophysical and biological resources description of the study area a wetland delineation report

STUDY AREA DESCRIPTION

GRTE encompasses approximately 310,000 acres consisting of rugged peaks, sagebrush flats, and the Snake in Moose, Wyoming, which is approximately 12 highway miles north of Jackson, Wyoming; 27

; and 293 miles north of Salt Lake City, Utah. The southern edge of GRTE is 4.3 miles north of Jackson, and extends 53 miles north along the Snake River to its northern boundary, which is at the southern boundary of Yellowstone and approximately eight miles east of the Idaho-Wyoming state line. The eastern boundary of GRTE is approximately two miles east of Moran, Wyoming. Besides the dam on Jackson Lake, the Snake River and its tributaries are free-flowing throughout GRTE.

PROPOSED PROJECT DESCRIPTION

This project is necessary to address critical water system deficiencies by replacing the failing, inadequate, and 50-year-old waterline systems at GRTE park headquarters and adjacent developed areas at Beaver Creek and the 4 Lazy F Guest Ranch. The waterline project area is located in Teton County, Wyoming. The project area extends approximately 5.1 miles mostly along Cottonwood Creek, and northwest and north of Moose, Wyoming.

The waterline project area includes a 40-foot-wide construction area (26.4 acres). The waterline study area includes the project area plus a 50-foot-wide limits-of-disturbance buffer on each side of the construction area (88.4 acres). The study area includes wooded foothills at the eastern base of the Teton Range, which transition to sagebrush flats and riparian areas. The waterline study area extends from 6,475 feet in elevation (where the Cottonwood Creek drains into the Snake River), to 6,812 feet in elevation at the water storage tank in the northwestern portion of the study area.

INTRODUCTION

The two main components of the proposed project (Nelson Engineering 2014) include:

1. The construction of new water system infrastructure that includes two, 150 gallons per minute wells, a 520 square-foot well-house building with electrical and chemical treatment rooms, a 300,000 gallon buried concrete water storage tank, the installation of approximately 17,100 and 5,525 linear feet of 12-inch and 8-inch diameter high-density polyethylene water transmission main, and a telemetry based Supervisory Control and Data Acquisition control system.

2. The demolition of existing water system infrastructure including Taggart Well No. 1, the well house, a 50,000 gallon insulated above-ground steel water storage tank (Taggart Tank), 100,000 gallon buried concrete water storage tank (Windy Point Tank), and existing utility vaults as indicated in the construction drawings.

AREA ENVIRONMENTAL BACKGROUND

GEOLOGY AND GEOMORPHOLOGY

The U.S. Geological Survey (USGS) categorizes physiographic regions based on Fenneman and Physical Divisions of the United States, which is based on eight major regions, 25 provinces, and 86 sections representing distinctive areas with common topography, rock types and structure, and geologic and geomorphic history. Under this classification system, the study area is located in the Rocky Mountain System region, specifically the Middle Rocky Mountains physiographic province (USGS 2003, 2014a). The following description of general geologic features in the region is taken from NPS (2012), unless otherwise noted.

The Teton Range consists of some of the oldest rock in North America although the mountain range is one of the youngest with the uplift of the range occurring in recent geologic time. The east face of the range is made up of metamorphic rocks including gneiss and granite. The dramatic uplift of the Teton Range is the result of tectonic activity that includes the Teton fault. During the Pleistocene epoch, the Pinedale glaciation (25,000 to 10,000 years ago) carved many of the glacial features seen today. The landscape is still active, and earthquakes along with ice, water, and wind continue to shape the Teton Range and valley floors.

The landscape within the study area was shaped by several glacial advances; the first known glacial advance was the Buffalo glaciation followed by the Bull Lake glaciation, which occurred between 160 to 130 thousand years ago. The majority of the surficial geology within the study area consists of glacial debris from the third-most recent (Pinedale) glaciation, which occurred 25,000 to 10,000 years ago.

The geologic map of the Moose Quadrangle (Love 2001) identifies three geologic map units within the study area, and includes: glacial debris of the most recent (Pinedale) major glaciation (Qg3), outwash gravel deposits from the Burned Ridge Moraine (Qbro), and quaternary gravel deposits (Qag) (southern 30% of the study area). The Qg3 geologic map unit comprises approximately the northern 10% of the study area, and is located in the forested Teton foothills west of the Taggart Lake Trail Parking Area. The Qg3 is described as morainal debris with sharp rough unmodified surface topography, little weathering of rock fragments, and sparse soil development. Qg3 is correlated from the Pleistocene Epoch of the Quaternary Period. The Qbro geologic map unit comprises approximately the middle 60% of the study area, and begins at the eastern edge of the West Terrace 3, which is 20-30 feet above the present Snake River level, along Teton Park Road to the Cottonwood Creek Turnout. The Qbro is described as downstream from Burned Ridge moraine (part of third or Pinedale glaciation). Qbro is correlated from the Pleistocene Epoch of the Quaternary Period. The Qag geologic map unit comprises approximately the southern 30% of the study area, and is located from the Snake River to the West Terrace 3. The Qag is described as gravel deposited along flood channelways of major streams, composed chiefly of quartzite roundstones. Qag is correlated from the more recent Holocene Epoch of the Quaternary Period.

SOILS

The soils of these geologic glacial debris and gravel deposits are predominantly gravelly loams to fine sandy loams, with moderately high to high infiltration rates and are mostly weathered from alluvium derived from igneous, metamorphic, and sedimentary rocks or gravelly glaciofluvial deposits (Natural Resources Conservation Service [NRCS] 2013).

AREA ENVIRONMENTAL BACKGROUND

Eight soil series are located within the approximate 93-acre study area (including the 50-foot limits of disturbance buffer). These soils series are listed from the highest percentage of the study area to the lowest percentage: Tineman-Bearmouth gravelly loams, 0 to 3% slopes (33.7%), Tineman gravelly loam (20.1%), Tineman association (18.0%), Tetonville-Riverwash complex (10.6%), Taglake-Sebud association (8.6%), Tetonville-Wilsonville fine sandy loams (8.4%), Cryaquolls-Cyrofibrists complex (0.3%), and Leavitt variant loam (0.3%) (NRCS 2013). Of these soils, only the Cryaquolls-Cyrofibists complex is identified as a hydric soil.

WATER RESOURCES

The study area is located within the Columbia River Drainage Basin, which flows into the Pacific Ocean. Specifically, the study area is located in the Pacific Northwest Region Hydrologic Unit Code (HUC) 17 (first level of classification) (Environmental Protection Agency [EPA] 2014). This large drainage basin can subsequently be divided into smaller drainage or subwatershed areas.

More precisely, the study area is located within the upper watershed tributaries of the south-flowing Snake River Watershed (Snake Headwater Watershed (HUC 17040101) (EPA 2014). The stretch of the Snake River that flows through the study area is designated as a Wild and Scenic River (National Wild and Scenic Rivers System 2014).

The main tributary in the study area is south-flowing Cottonwood Creek, which flows out of Jenny Lake at the base of Grand Teton. Two tributaries of Cottonwood Creek, Taggart Creek and Beaver Creek, flow southeast and cross the northern portion of the project area. Cottonwood Creek flows into the Snake River just north of the 4 Lazy F Road.

ECOREGION

The study area is located in the broad Middle Rockies (17) level III ecoregion, which is composed of steep-crested, high mountains that are largely covered by coniferous forests (Chapman et al.

2004). These forests are typically composed of open-canopied lodgepole pine (Pinus contorta) forests, and are partly wooded or shrub- and grass-covered. Intermontane valleys of the Middle Rockies ecoregion are grass- and/or shrub-covered and contain a mosaic of terrestrial and aquatic fauna that is distinct from the nearby mountains. Many mountain-fed, perennial streams occur and provide water resources for the more adjacent and arid ecoregions. Common land uses of the Middle Rockies ecoregion are recreation, logging, mining, and summer livestock grazing.

Specific to this study area, there is only one level IV ecoregion: High Elevation Valleys (17n)

This ecoregion includes wet bottomlands, marshes, stream terraces, alluvial fans, and lower foothill slopes. Elevations in this ecoregion range from 5,000 to 8,000 feet, and annual precipitation is 12-30 inches. Typical vegetation on terraces and foothill slopes includes big sagebrush (Artemisia tridentata) with an understory of Idaho fescue (Festuca idahoensis) and bearded wheatgrass (Elymus caninus). Typical vegetation in mesic areas and on north-facing slopes includes Douglas-fir (Pseudotsuga menziesii) with an understory of snowberry (Symphoricarpos oreophilus) and pinegrass (Calamagrostis rubescens). Also, some aspen (Populus tremuloides) groves occur in upland areas. Typical agricultural uses in this ecoregion include pasture, non-irrigated winter wheat, spring barley, hay, and livestock grazing; however, the cold climate and short growing season limit the extent of agriculture. Also these areas are used for winter ranges for several species of wildlife. Human activity has somewhat altered the landscape of the proposed WWTP study area over the last 100 years, yet creeks and wetlands have persisted in many areas.

WETLAND DELINEATION

INTRODUCTION

To be consistent with permitting requirements established under Section 404 of the Clean Water Act (EPA 2007), the extent of naturally and artificially occurring wetlands in the Moose Water System Improvements study area was determined based on criteria outlined in the U.S. Army Corps of Engineers (USACE) Wetlands Delineation Manual (USACE 1987) and established in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE 2010). In addition, under DO 77-1: Wetland Protection (NPS 2002), the National Park Service classifies wetlands according to Classification of Wetlands and Deepwater Habitats of the United States, prepared for the U.S. Fish and Wildlife Service (USFWS) (Cowardin et al. 1979) and referred to hereafter as the Cowardin Classification System (CCS) (Cowardin et al. 1979). Unlike the USACE determination, wetlands identified under the CCS must meet at least one of the following criteria:

At least periodically, the habitat supports predominantly hydrophytic vegetation (wetland vegetation);

The substrate is predominantly undrained hydric soil; or The substrate is non-soil and saturated with water or is covered by shallow water at some time during the growing season.

Based on the CCS, DO 77-1 recognizes five wetland categories:

1. Areas with hydrophytes and hydric soils, such as those commonly known as marshes, swamps, and bogs;

2. Areas without hydrophytes but with hydric soils (e.g., flats where drastic fluctuations in water level, wave action, turbidity, or high concentration of salts may prevent the growth of hydrophytes);

3. Areas with hydrophytes but non-hydric soils, such as margins of impoundments or excavations where hydrophytes have become established but hydric soils have not yet developed;

4. Areas without soils but with hydrophytes such as the seaweed-covered portion of rocky shores; and

5. Wetlands without soil and without hydrophytes, such as gravel beaches or rocky shores without vegetation.

Category 1 wetlands would meet the USACE definition of a wetland and be afforded jurisdiction, provided the wetlands are not isolated, as discussed below. In an area that naturally has both vegetation and soils present, DO 77-1 directs wetland delineators to follow USACE guidelines and only classify areas meeting all three criteria as wetlands. The USACE generally does not consider categories 2 through 5 as the USACE does generally regulate them under the definition of waters of the United States (33 CFR 328.3).

The USACE and the EPA define jurisdictional wetlands as areas that are inundated or saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions (33 CFR, Part 328.3). The USACE regulates development in jurisdictional wetlands pursuant to Section 404 of the Clean Water Act (33 CFR, Parts 320-330). Identification and delineation of jurisdictional wetlands is based on three parameters:

WETLAND DELIINEATION

Hydrophytic vegetation the dominant vegetation consists of species capable of growing in water or on substrate that is at least periodically deficient in oxygen as a result of the presence of water.

Hydric soils soils that are saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions that favor the growth of hydrophytic vegetation.

Wetland hydrology the area is inundated permanently or periodically, or the soil is saturated to the surface for sufficient duration during the growing season to support hydrophytic vegetation.

The USACE and the EPA define waters of the United States as:

1. All waters which are currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide;

2. All interstate waters including interstate wetlands;

3. All other waters such as intrastate lakes, rivers, streams (including intermittent streams), mudflats, sandflats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes, or natural ponds, the use, degradation or destruction of which could affect interstate or foreign commerce including any such waters:

i. Which are or could be used by interstate or foreign travelers for recreational or other purposes; or

ii. From which fish or shellfish are or could be taken and sold in interstate or foreign commerce; or

iii. Which are used or could be used for industrial purposes by industries in interstate commerce;

4. All impoundments of waters otherwise defined as waters of the United States under this definition;

5. Tributaries of waters identified in paragraph(s) (1) through (4) of this section;

6. The territorial sea (40 CFR 230.3 - Definitions).

Thus waters of the United States include all isolated and non-isolated bodies that satisfy all three wetland criteria (hydrophytic vegetation, hydric soils, and wetland hydrology), or are navigable waterways, rivers, streams, lakes, and impoundments. Isolated wetlands are those wetlands that do not have a direct surface connection or are not adjacent to another aquatic resource, thus they are not afforded USACE jurisdiction. The National Park Service, on the other hand, extends protection to all wetlands classified using the CCS whether or not they are isolated or have a surface connection to another aquatic resource. For the purposes of this delineation the United States perennial, intermittent, and ephemeral streams that are considered jurisdictional by the USACE. Relatively permanent waters are defined as tributaries with year-round flow or continuous seasonal flow for at least three months per year (EPA 2007).

Intermittent streams that flow for three months or longer and perennial streams are considered

METHODOLOGY

Prior to conducting field investigations, federal and state documentation was researched and analyzed. Agency resources included U.S. Department of Agriculture (2012) aerial photography, USGS (1968) topographic maps, and National Wetland Inventory (USFWS 2014) and NRCS (2013) soil data for Teton County, Wyoming.

Site investigations for the presence of naturally and artificially occurring wetlands were conducted from June 22 through June 25, 2014, throughout the waterline study area. Other

Methodology dinary high water mark (OHWM) and other waters of the United States (OWUS) were also delineated and surveyed. The site extends approximately 5.1 miles mostly along Cottonwood Creek and includes a construction right-of-way of approximately 88 acres.

This study area includes the west bank of the Snake River, riparian areas, sagebrush flats and slopes, and forested areas. The purpose of the field investigations was to determine the federal jurisdictional boundaries of all wetlands and OWUS within the Moose waterline improvements study area. The study area included the limits of disturbance for all project features (project area), plus a limits of disturbance buffer of 50 feet. Adjacent wetland and OWUS edges that were just outside the limits of disturbance were recorded.

At each separate wetland, paired upland/wetland data points consisting of dominant vegetation, hydrology, and soil characteristics were recorded in accordance with dataform requirements of

. Also it was noted if the wetland was natural or artificial. All three parameters are also considered in determining the location of the wetland/upland boundary. Flora nomenclature and determination of hydrophytic characteristics of vegetation were in accordance with the (2014) State of Wyoming Plant List.

Photographs of each data collection location and wetland/upland boundaries were taken. The location of the wetland/upland boundaries was flagged based on the dataform analysis and landform characteristics. Wetlands were flagged using pink flagging tape and numbered alphanumerically. Additionally, upland data points were collected to identify the various upland areas within the site. Flags placed along the wetland/upland boundary were surveyed with a Trimble® GeoXH sub-meter global positioning system (GPS). Figure 2 shows the limits of the study area. Completed functional assessments are located in Appendix A, routine data forms are located in Appendix B, and an observed vegetative species list is located in Appendix C.

After observing and reviewing the characteristics of each wetland, the functions and values of these areas were determined using The Montana Department of Transportation Montana Wetland Assessment Method (Berglund and McEldowney 2008). Wetland functions are processes that tend to improve the environmental quality of an ecosystem and are self-sustaining properties of a wetland ecosystem that exist in the absence of society, and relate to ecological significance without regard to subjective human values (USACE 1995). Examples of this include groundwater recharge/discharge, stormwater and flood control, improvement of water quality, sediment stabilization and retention, and aquatic and wildlife diversity and habitat. Values are functions that are highly valued by society. These include water quality maintenance, flood control, shoreline erosion control, groundwater supply recharge, hunting and recreation, and commercial fishing. Assessing wetland functions and values is a vital step in characterizing the importance of these areas (USACE 1995).

RESULTS

Field surveys within and adjacent to the study area identified seven jurisdictional wetlands. Also, 11 other areas that qualified as wetlands under NPS guidelines were identified, and seven of these natural areas also qualify as OWUS under USACE guidelines, for a total of 18 areas (Table 1;

Figure 2). The 18 delineated wetland areas account for 4.961 acres in and immediately adjacent to the study area. Of these acres, 0.06 acre of USACE jurisdictional wetlands occur within the project area, and 0.08 acre of NPS/OWUS wetlands occur in the project area. Table 1 displays the specific characteristics of the 18 delineated wetlands, including if it is natural or artificial, the jurisdiction it falls under, location, CCS type, specific acreages in the study and project areas, and impact totals.

WETLAND DESCRIPTIONS

This section provides specific descriptions of the USACE and NPS wetlands and OWUS areas that were identified within the study area (Figures 2A-2E). This discussion of wetlands begins by discussing the wetlands in the northern portion of the study area, and then continues to the south. This discussion describes if the wetlands are artificial or natural, the type of wetland observed, the soil map unit location, and the dominant vegetative species.

Pond-NPS2

Pond-NPS2 (Photo 1; Figure 2A) is an isolated and natural NPS wetland and OWUS, and it does not qualify as a wetland under the 1987 USACE guidelines because it exhibits only two of the three wetland criteria (hydrology and hydric soils). However, it qualifies as a wetland under the

-1. This NPS wetland is approximately 6,181 square feet (0.142 acre) within and adjacent to the 50-foot study area, but no acres are located within limits of disturbance (project area). Under CCS, Pond-NPS2 is classified as a Palustrine Unconsolidated Bottom, Mud, Permanently Flooded (PUB3H) wetland. No culverts were observed.

Pond-NPS2 is located within the non-hydric Taglake-Sebud association soil map unit. No soil sample was taken because it does not have enough hydrophytic vegetative cover to qualify as a wetland under the 1987 USACE guidelines. Pond-NPS2 is dominated by bare ground and minimal (less than 30%) forbs.

Major function and values in this wetland include sediment/nutrient/toxicant removal, uniqueness, general wildlife habitat, and production export/food chain support.

TABLE 1: WETLAND/STREAM CHARACTERISTICS: MOOSE WATERLINE

Wetland/Stream Identification (Natural or Artificial)

Wetland/Stream Jurisdiction

(USACE, CCS, OWUS

subject to USACE)

Figure # Location Type (CCS)

Total Area (sq. ft.)

Within and Adjacent to the 50-foot Study Area (acres); Stream

Length (l.f.)

Total Area (sq.

ft.) only within the 50-foot Study Area (acres)

Total Area (sq. ft.)

only within the

Project Area (acres)

CCS/OWUS Areas Proposed to be impacted in the

Project Area

USACE jurisdictional wetland areas proposed to be impacted in the

Project Area

BM-A1-Wet2 (Natural)

USACE, CCS 2B

West bank, along unnamed north tributary to Taggart Creek, south of access road

Floodplain wetland

(PEM1F)

233 (0.005) 232 (0.005) 0 0 0

BM-B1-Wet1 (Natural)

USACE, CCS 2B

Northeast bank wetland, along Taggart Creek, south of turnaround

Floodplain wetland

(PEM1F)

932 (0.021) 802 (0.018) 0 0 0

BM-D1-Wet2 (Natural)

USACE, CCS 2B South branch off of Taggart Creek Palustrine Emergent wetland

(PEM1F)

14,176 (0.325) 10,075 (0.231) 1,376 (0.032) 1,376 (0.032) 1,376 (0.032)

BM-NPS1

(Artificial)

CCS; OWUS subject to

USACE

2C Northeast of Beaver Creek culvert and two-track road

Sparsely vegetated wet swale (PUB1Cd)

368 (0.008) 276 (0.006) 0 0 0

Pond-NPS2 (Natural)

CCS; OWUS subject to

USACE

2A Southwest of the existing water tank, south of Taggart Creek

Sparsely vegetated pond with no connection to a

WOUS (PUB3H)

6,181 (0.142) 1,559 (0.036) 0 0 0

Pond-NPS3 (Natural)

CCS; OWUS subject to

USACE

2A Southeast of the existing water tank, south of Taggart Creek

Sparsely vegetated pond with no connection to a

WOUS (PUB3H)

6,142 (0.141) 4,133 (0.095) 772 (0.018) 772 (0.018) 0

RK-A1-Wet1 (Natural)

USACE, CCS 2B

East bank, along north tributary to Taggart Creek, north and south of access road

Floodplain wetland

(PEM1F)

632 (0.015) 537 (0.012) 11 (0.000) 11 (0.000) 11 (0.000)

RK-C1-Wet1 (Natural)

USACE, CCS 2C Along Beaver Creek

Palustrine emergent and scrub-shrub wetland (PSS6G)

128,563 (2.951) 13,142 (0.302) 1,376 (0.032) 1,376 (0.032) 1,376 (0.032)

RK-D1-Wet1 (Natural)

USACE, CCS 2A

Small wetland on south bank of Taggart Creek

Floodplain wetland

(PEM1B)

46.5 (0.001) 0 0 0 0

RK-E1-Wet1 (Natural)

USACE, CCS 2D

North of the northern portion of the 4LazyF Road

Palustrine emergent wetland

(PEM1F)

25,069 (0.576) 1,488 (0.034) 0 0 0

Riverine Area 1 (Natural)

CCS; OWUS subject to

USACE

2B Open water area of Taggart Creek within the Study Area

Upper perennial tributary to tributaries of the Snake River

(R3UB1H)

1,545 (0.035); 140 l.f. 1,545 (0.035) 0 0 0

Wetland/Stream Identification (Natural or Artificial)

Wetland/Stream Jurisdiction

(USACE, CCS, OWUS

subject to USACE)

Figure # Location Type (CCS)

Total Area (sq. ft.)

Within and Adjacent to the 50-foot Study Area (acres); Stream

Length (l.f.)

Total Area (sq.

ft.) only within the 50-foot Study Area (acres)

Total Area (sq. ft.)

only within the

Project Area (acres)

CCS/OWUS Areas Proposed to be impacted in the

Project Area

USACE jurisdictional wetland areas proposed to be impacted in the

Project Area

Riverine Area 2 (Natural)

CCS; OWUS subject to

USACE

2B Open water area of an unnamed tributary to Taggart Creek, south of the access road.

Upper perennial tributary to tributaries of the Snake River

(R3UB1H)

718 (0.016); 55 l.f. 718 (0.016) 8 (0.000) 8 (0.000) 0

Riverine Area 3 (Natural)

CCS; OWUS subject to

USACE

2A Open water area of Taggart Creek within the Study Area

Upper perennial tributary to tributaries of the Snake River

(R3UB1H)

11,923 (0.274); 510 l.f. 11,293 (0.274) 0 0 0

Riverine Area 4 (Natural)

CCS; OWUS subject to

USACE

2B Open water area of an unnamed tributary to Taggart Creek, north of the access road.

Upper perennial tributary to tributaries of the Snake River

(R3UB1H)

948 (0.022); 52 l.f. 948 (0.022) 0 0 0

Riverine Bank 1 (Natural)

CCS 2D

East of the northern end of the 4LazyF Road

West bank of the Snake River

(R3US1C)

7,400 (0.170) 0 0 0 0

Riverine Bank 2 (Natural)

CCS 2E Midway along 4LazyF Road West bank of the Snake River

(R3US1C)

5,283 (0.121) 20 (0.000) 0 0 0

Riverine Bank 3 (Natural)

CCS 2A

South and Southwest Bank of Taggart Creek

Bank of Taggart Creek (R3US1A)

5,846 (0.134) 2,657 (0.061) 0 0 0

Riverine Bank 4 (Natural)

CCS 2B

North Tributary to Taggart Creek, north of access road

West upland tributary bank

(R3US5A)

184 (0.004) 184 (0.004) 0 0 0

TOTAL

7 USACE-only wetlands

7 USACE OWUS and NPS wetlands

4 NPS-only wetlands

18 total areas

216,190 sq. ft.

(4.961 ac)

50,238 (1.15) 3,543 (0.08) 3,543 (0.08) 2,763 (0.06)

RK-D1-Wet1

Riverine Area 3

Pond-NPS2

Pond-NPS3

RK-D1-Wet1 Test Pit

Riverine Bank 3

TTaaggggaarrtt CCrreeeekk

2B

2E

2C

2A

2D

Legend

Water Line (Project Area)

50ft Buffer (Study Area)

NHD Flowline

Photo-Interpreted Wetland

OHWM Line

NPS

USACE

USACE OWUS/NPS

Surveyor's Control Point

Pedestrian Bridge

Field Control Point

Goshawk

Control Structure

Upland Sample Location

Wetland Sample Location

Grand Teton National Park Critical Moose Water System Deficiencies - PMIS # GRTE 149677 Moose, WY

National Park Service U.S. Department of the Interior

Figure 2A: Delineated Wetlands

Sources: USDA 2012, Nelson Engineering 2014

0 100 Feet 1 in = 100 ft

Wetland Descriptions

PHOTO 1: POND-NPS2 (SOUTHWEST VIEW)

Pond-NPS3

Pond-NPS3 (Photo 2; Figure 2A) is an isolated and natural NPS wetland and OWUS, and it does not qualify as a wetland under the 1987 USACE guidelines because it exhibits only two of the three wetland criteria (hydrology and hydric soils). However, it qualifies as a wetland under the

-1. This NPS wetland is approximately 6,142 square feet (0.141 acre) within and adjacent to the study area, but no acres are within the limits of disturbance (project area). Under CCS, Pond-NPS3 is classified as a Palustrine Unconsolidated Bottom, Mud, Permanently Flooded (PUB3H) wetland. No stormflow structures were observed along this pond.

Pond-NPS3 is located within the non-hydric Taglake-Sebud association soil map unit. No soil sample was taken because it does not have enough hydrophytic vegetative cover to qualify as a wetland under the 1987 USACE guidelines. Pond-NPS3 is dominated by bare ground and minimal (less than 30%) forbs.

Major function and values in this wetland include sediment/nutrient/toxicant removal, uniqueness, general wildlife habitat, and production export/food chain support.

PHOTO 2: POND-NPS3 (SOUTH VIEW)

RK-D1-Wet1

Wetland RK-D1-Wet1 (Photos 3-4; Figure 2A) is a natural USACE jurisdictional wetland within the southern channel of Taggart Creek. Under CCS, RK-D1-Wet1 is classified as a Palustrine Emergent, Persistent, Saturated (PEM1B) wetland. This USACE wetland is approximately 46.5 square feet (0.001 acre) adjacent to the study area, but no acres are within the limits of disturbance (project area).

Wetland RK-D1-Wet1 is located within the non-hydric Taglake-Sebud association soil map unit.

A soil sample 7 inches deep consisted of a 10 YR 4/1 loam. Wetland RK-D1-Wet1 vegetation is predominantly hydrophytic and dominated by water sedge (Carex aqualitis) and lodgepole pine (Pinus contorta). Multiple wetland hydrology indicators were observed during the soil pit investigation, consisting of a high water table (4-inch depth), saturation starting at the surface, drainage patterns, and its geomorphic position. No flow control structures were observed on these areas.

Major function and values in this wetland include listed/proposed threatened and endangered (T&E) species habitat, Wyoming Heritage Program species habitat, general wildlife habitat, and sediment/nutrient/toxicant removal.

PHOTO 3: RK-D1-WET1 (WETLAND SOIL PIT)

PHOTO 4: RK-D1-WET1 (UPLAND SOIL PIT)

Riverine Bank 3 and Riverine Area 3

Riverine Bank 3 and Riverine Area 3 (Photo 5; Figure 2A) are naturally occurring, but do not qualify as a wetland under the 1987 USACE guidelines because these polygons exhibit only one of the three wetland criteria (hydrology). Riverine Bank 3 is only considered an NPS wetland because it extends from the OHWM to the top of bank. Riverine Area 3 is considered an NPS wetland and OWUS because it encompasses only the open water areas within the study area along Taggart Creek. Riverine Bank 3 is located along the southern bank of Taggart Creek, and is approximately 5,846 square feet (0.134 acre) along and adjacent to the study area, but no acres are within the limits of disturbance (project area). Under CCS, Riverine Bank 3 is classified as a Riverine, Upper Perennial, Unconsolidated Shore, Cobble-Gravel, Temporarily Flooded (R3US1A) streambank, and Riverine Area 3 is classified as a Riverine, Upper Perennial, Unconsolidated Bottom, Cobble-Gravel, Permanently Flooded (R3UB1H) streambed. Similarly, Riverine Area 3 is 11,923 square feet (0.274 acre) within and adjacent to the study area, but no acres are within the limits of disturbance (project area). Riverine Bank 3 and Riverine Area 3 are located within the non-hydric Taglake-Sebud association soil map unit. No soil sample was taken because these polygons do not have enough hydrophytic vegetative cover to qualify as a wetland under the 1987 USACE guidelines. Riverine Bank 3 is dominated by boulders and bare/alluvially eroded soils. Where vegetation does persist, there is a mixture of upland and wetland vegetation, but the wetland vegetation does not exceed 50% dominance. A flow control structure was located just upstream of this polygon (Figure 2A).

Major function and values in these areas include listed/proposed T&E species habitat, Wyoming Heritage Program species habitat, general wildlife habitat, and sediment/nutrient/toxicant removal.

PHOTO 5: RIVERINE BANK 3 IS ON THE RIGHT/SOUTH SIDE OF TAGGART CREEK (RIVERINE AREA 3)

(SOUTHEAST VIEW FROM PEDESTRIAN TRAIL BRIDGE)

BM-D1-Wet2

BM-D1-Wet2 (Photos 6-8; Figure 2B) is a natural USACE jurisdictional wetland that branches off Taggart Creek to the south. This wetland is approximately 14,176 square feet (0.325 acre) within and adjacent to the study area and 1,376 square feet (0.032 acre) within the limits of disturbance (project area). This wetland extends approximately 600 feet south of Taggart Creek before the hydrology is not sustained and percolates down into the aquifer, while an upland swale continues.

This loss of hydrology on the southern end of BM-D1-Wet2 results in a loss of hydric soils and hydrophytic vegetation. Under CCS, BM-D1-Wet2 is classified as a Palustrine Emergent, Persistent, Semipermanently Flooded (PEM1F) wetland. No hydrologic structures were observed along this wetland.

BM-D1-Wet2 is located across three non-hydric soil map units: Taglake-Sebud association;

Tineman-Bearmouth gravely loams, 0 to 3% slopes; and Tineman association. A soil sample 16 inches deep consisted of a 7.5YR 2.5/1 sandy loam, then refusal with two types of redox features.

BM-D1-Wet2 vegetation is predominantly hydrophytic and dominated by Northwest Territory sedge (Carex utriculata) and Kentucky bluegrass (Poa pratensis). Multiple wetland hydrology indicators were observed during the soil pit investigation, consisting of surface water that was 0.5-inch deep and subsequent water table and saturation that was present.

Major function and values in this wetland include listed/proposed T&E species habitat, Wyoming Heritage Program species habitat, sediment/nutrient/toxicant removal, and groundwater discharge/recharge.

RK-A1-Wet1

Unnamed North Tributary to Taggart Creek (Photo-Interpreted)

Riverine Bank 4

Riverine Area 1

Riverine Area 2

Riverine Area 4

BM-D1-Wet2

BM-B1-Wet1

RK-A1-Wet1 BM-A1-Wet2

RK-A1-Wet1 Test Pit

BM-D1-Wet2 Test Pit BM-A1-Wet2 Test Pit

BM-B1-Wet1 Test Pit

RK-A1-Wet1 Test Pit

Riverine Bank 4 Test Pit

Te to n P a rk

R d

TTaaggggaarrtt CCrreeeekk

2B

2E

2C

2A

2D

Legend

Water Line (Project Area)

50ft Buffer (Study Area)

NHD Flowline

Photo-Interpreted Wetland

OHWM Line

NPS

USACE

USACE OWUS/NPS

Surveyor's Control Point

Pedestrian Bridge

Culvert

Spring

Upland Sample Location

Wetland Sample Location

Grand Teton National Park Critical Moose Water System Deficiencies - PMIS # GRTE 149677 Moose, WY

National Park Service U.S. Department of the Interior

Figure 2B: Delineated Wetlands

Sources: USDA 2012, Nelson Engineering 2014

0 100 Feet 1 in = 100 ft

PHOTO 6: BM-D1-WET2 (NORTHWEST VIEW)

PHOTO 7: BM-D1-WET2 (WETLAND TEST PIT)

PHOTO 8: BM-D1-WET2 (UPLAND TEST PIT)

Riverine Bank 4 and Riverine Area 4

Riverine Bank 4 (Photo 9; Figure 2B) is a natural upland vegetated streambank, located on the west bank of an unnamed north tributary to Taggart Creek (Riverine Area 4), and north of a vehicle bridge. These two areas do not qualify as a wetland under the 1987 USACE guidelines because they exhibit only one or two of the three wetland criteria (hydrology and hydrophytic vegetation). In most places, Riverine Bank 4 has upland vegetation, and therefore qualifies only as

-1. Riverine Area 4 is considered an NPS wetland and OWUS.

Riverine Bank 4 is approximately 184 square feet (0.004 acre) within the study area, and no acres are located within the limits of disturbance (project area). Similarly, Riverine Area 4 is 948 square feet (0.022 acre) within the study area, and no acres are located within the limits of disturbance (project area). Under CCS, Riverine Area 4 is classified as a Riverine, Upper Perennial, Unconsolidated Bottom, Cobble-Gravel, Permanently Flooded (R3UB1H) streambed. A culvert passes this creek under an access road.

Riverine Bank 4 is dominated by a mix of wetland and upland vegetation. Under CCS, Riverine Bank 4 is classified as a Riverine, Upper Perennial, Unconsolidated Shore, Vegetated, Temporarily Flooded (R3US5A) streambank. Riverine Bank 4 and Riverine Area 4 are located within two non-hydric soil map units: Taglake-Sebud association and Tineman-bearmouth gravelly loams, 0 to 3% slopes. A soil sample was taken to confirm that Riverine Bank 4 does not have hydric soils and thus does not qualify as a wetland under the 1987 USACE guidelines.

Major function and values in these areas include listed/proposed T&E species habitat, general wildlife habitat, flood attenuation, sediment/nutrient/toxicant removal, and sediment/shoreline stabilization.

PHOTO 9: RIVERINE BANK 4 (NORTH VIEW FROM VEHICLE BRIDGE)

ALONG THE WESTERN (LEFT) BANK OF AN UNNAMED NORTH TRIBUTARY TO TAGGART CREEK

RK-A1-Wet1 and Riverine Area 2

RK-A1-Wet1 (Photos 10-13; Figure 2B) is a natural USACE jurisdictional wetland, consisting of streamside edge wetlands along the east bank of an unnamed north tributary to Taggart Creek, both upstream (Riverine Area 4) and downstream (Riverine Area 2) of a vehicle bridge. This wetland is approximately 632 square feet (0.015 acre) within the study area, and 11 square feet (0.000 acre) is within the limits of disturbance (project area). Under CCS, BM-D1-Wet1 is classified as a Palustrine Emergent Persistent, Semipermanently Flooded (PEM1F) wetland. A culvert passes this creek under an access road.

RK-A1-Wet1 vegetation is predominantly hydrophytic and is dominated by reed canarygrass (Phalaris arundinacea) and water sedge. RK-A1-Wet1 is located within the non-hydric Taglake- Sebud association soil map unit, and a soil sample 16 inches deep consisted of sandy loams and sands with a chroma ranging from 1-3. Multiple wetland hydrology indicators were observed during the soil pit investigation, including saturation at 12 inches, drainage patterns, saturation visible on aerial imagery, and geomorphic position.

Major function and values in this wetland include listed/proposed T&E species habitat, Wyoming Natural Heritage Program species habitat, general wildlife habitat, flood attenuation, and sediment/shoreline stabilization.

PHOTO 10: RK-A1-WET1 AND RIVERINE AREA 4 (NORTH VIEW FROM VEHICLE BRIDGE)

PHOTO 11: RK-A1-Wet1 AND RIVERINE AREA 2 (SOUTH VIEW FROM VEHICLE BRIDGE)

PHOTO 12: RK-A1-Wet1 (WETLAND TEST PIT)

PHOTO 13: RK-A1-Wet1 (UPLAND TEST PIT)

BM-A1-Wet2 and Riverine Area 2

BM-A1-Wet2 (Photos 14-16; Figure 2B) is a natural USACE jurisdictional wetland, consisting of streamside edge wetlands on the west bank of an unnamed north tributary to Taggart Creek (Riverine Area 2), downstream of a vehicle bridge. This wetland is approximately 233 square feet (0.005 acre) within the study area, and no acres are located within the limits of disturbance (project area). Under CCS, BM-A1-Wet2 is classified as a Palustrine Emergent Persistent, Semipermanently Flooded (PEM1F) wetland. A culvert passes this creek under an access road.

BM-A1-Wet2 vegetation is predominantly hydrophytic and is dominated by reed canarygrass.

BM-A1-Wet2 is located within non-hydric Taglake-Sebud association soil map unit. A soil sample 16 inches deep consisted of loams with a chroma of 1 or 2. Multiple wetland hydrology indicators were observed during the site visit, consisting of a high water table (6-inch depth), saturation starting at 3 inches, water marks, and drainage patterns.

Major function and values in this wetland include listed/proposed T&E species habitat, Wyoming Natural Heritage Program species habitat, sediment/nutrient/toxicant removal, and

PHOTO 14: BM-A1-Wet2 AND RIVERINE AREA 2 (SOUTH VIEW FROM VEHICLE BRIDGE)

PHOTO 15: BM-A1-Wet2 (WETLAND TEST PIT)

PHOTO 16: BM-A1-Wet2 (UPLAND TEST PIT)

BM-B1-Wet1 and Riverine Area 1

BM-B1-Wet1 (Photos 17-19; Figure 2B) is a natural USACE jurisdictional wetland, consisting of northeast-bank wetlands along Taggart Creek (Riverine Area 1), south of the vehicle turnaround.

This wetland is approximately 930 square feet (0.021 acre) within the study area, and no acres are located within the limits of disturbance. Under CCS, BM-B1-Wet1 is classified as a Palustrine Emergent, Persistent, Semipermanently Flooded (PEM1F) wetland. No hydrologic control or flow structures were observed along or nearby this wetland.

BM-B1-Wet1 vegetation is predominantly hydrophytic and is dominated by reed canarygrass.

BM-B1-Wet1 is located within the non-hydric Taglake-Sebud association soil map unit. A soil sample 16 inches deep consisted of an organic mucky soil with a color of 10YR 2/1. Multiple wetland hydrology indicators were observed during the soil pit investigation, consisting of 2 to 3 inches of surface water and corresponding water table and saturation.

Major function and values in this wetland include listed/proposed T&E species habitat, general wildlife habitat, sediment/nutrient/toxicant removal, and sediment/shoreline stabilization.

PHOTO 17: BM-B1-Wet1 (SOUTH VIEW FROM WETLAND EDGE)

PHOTO 18: BM-B1-Wet1 (WETLAND TEST PIT)

PHOTO 19: BM-B1-Wet1 (UPLAND TEST PIT)

BM-NPS1

BM-NPS1 (Photo 20; Figure 2C) is an artificial and isolated NPS wetland and OWUS, and it does not qualify as a wetland under the 1987 USACE guidelines because it exhibits only two of the three wetland criteria (hydrology and hydric soils). However, it qualifies as a wetland under the

-1. This wetland is approximately 368 square feet (0.008 acre) within the study area, and no acres are within the limits of disturbance (project area). Under CCS, BM-NPS1 is classified as a Palustrine, Unconsolidated Bottom, Cobble-Gravel, Seasonally Flooded, Ditched (PUB1Cd) wetland. BM-NPS1 is located within the non-hydric Tineman association soil map unit. A culvert is located on the eastern extent of this wetland, so stormflows can drain into RK- C1-Wet1.

Major function and values in this wetland include listed/proposed T&E species habitat, Wyoming Natural Heritage Program species habitat, general wildlife habitat, and sediment/nutrient/toxicant removal.

PHOTO 20: BM-NPS1 (OUTLINED IN RED; NORTHWEST VIEW)

RK-C1-Wet1

RK-C1-Wet1 (Photos 21-25; Figure 2C) is a natural USACE jurisdictional wetland, consisting of a wetland along Beaver Creek. This wetland is approximately 128,563 square feet (2.951 acres) within and adjacent to the study area, and 1,376 square feet (0.032 acre) within the limits of disturbance (project area). Under CCS, RK-C1-Wet1 is classified as a Palustrine Emergent, Persistent, Semipermanently Flooded (PEM1F) wetland, and a Palustrine Scrub-shrub, Deciduous, Permanently Flooded (PSS6G) wetland. Surveyed lines BM-C1-Wet2 (112 LF) and BM-C1-Wet3 (22 LF) were taken for confirmation that the wetland boundary was outside the limits of disturbance at adjacent locations. A culvert is located on the eastern extent of this wetland, so stormflows can drain into RK-C1-Wet1.

RK-C1-Wet1 vegetation is predominantly hydrophytic and dominated by sedges (Carex spp.).

RK-C1-Wet1 is located within the non-hydric Tineman association soil map unit. A soil sample 3 inches deep consisted of organic matter on top of rock refusal. Multiple wetland hydrology indicators were observed during the soil pit investigation, consisting of a 4 inches of surface water and corresponding water table and soil saturation.

Major function and values in this wetland include listed/proposed T&E species habitat, flood attenuation, short- and long-term surface water storage, sediment/nutrient/toxicant removal, and

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CC

rree e e k k

RK-C1-Wet1

BM-NPS1

RK-C1-Wet1 Test Pit

Te to n P a rk

R d

Beaver Creek Rd

CCoottttoonnwwoooodd CCrreeeekk

2B

2E

2C

2A

2D

Legend

Water Line (Project Area)

50ft Buffer (Study Area)

NHD Flowline

Photo-Interpreted Wetland

OHWM Line

NPS

USACE

USACE OWUS/NPS

Surveyor's Control Point

Field Control Point

Culvert

Upland Sample Location

Wetland Sample Location

Grand Teton National Park Critical Moose Water System Deficiencies - PMIS # GRTE 149677 Moose, WY

National Park Service U.S. Department of the Interior

Figure 2C: Delineated Wetlands

Sources: USDA 2012, Nelson Engineering 2014

0 200 Feet 1 in = 200 ft

PHOTO 21: RK-C1-Wet1 (NORTHERN EDGE, EAST VIEW)

PHOTO 22: RK-C1-Wet1 (NORTHERN EDGE, WEST VIEW FROM CULVERT)

PHOTO 23: RK-C1-Wet1 (SOUTHERN EDGE, EAST VIEW)

PHOTO 24: RK-C1-Wet1 (WETLAND TEST PIT)

PHOTO 25: RK-C1-Wet1 (UPLAND TEST PIT)

Riverine Bank 1 and 2

Neither Riverine Bank 1 nor 2 (Photo 26; Figures 2D and 2E) qualify as a wetland under the 1987 USACE guidelines because both polygons exhibit only one of the three wetland criteria (hydrology). However, both qualify as a natural -1, but not as an OWUS. These two NPS wetlands are each approximately 0.1 acre adjacent to the study area, but no acres are located within the limits of disturbance (project area). These polygons were delineated to confirm that these NPS wetlands are outside the proposed limits of disturbance.

Under CCS, Riverine Bank 1 and 2 are classified as Riverine, Upper Perennial, Unconsolidated Shore, Cobble-Gravel Seasonally Flooded (R3US1C) streambanks. No flow control structures were observed along or near these banks.

RK-E1-Wet1

Riverine Bank 1

RK-E1-Wet1 Test Pit

4 Lazy F

Rd

CCoottttoonnwwoooodd CCrreeeekk

S n a k e R iv e r

S n a k e R iv e r

2B

2E

2C

2A

2D

Legend

Water Line (Project Area)

50ft Buffer (Study Area)

NHD Flowline

Photo-Interpreted Wetland

OHWM Line

NPS

USACE

USACE OWUS/NPS

Surveyor's Control Point

Upland Sample Location

Wetland Sample Location

Grand Teton National Park Critical Moose Water System Deficiencies - PMIS # GRTE 149677 Moose, WY

National Park Service U.S. Department of the Interior

Figure 2D: Delineated Wetlands

Sources: USDA 2012, Nelson Engineering 2014

1 in = 150 ft

Riverine Bank 2

Chapel of the Transfiguration Rd

4 La zy

F Rd

L a z y

F R d

SSnnaakkee RR iivv eerr

2B

2E

2C

2A

2D

Legend

Water Line…