Arid West Wetland Determination Form – Fill Out and Use This PDF

The Arid West Wetland Determination Form is an essential document utilized by the U.S. Army Corps of Engineers to assess the presence of wetland conditions within the arid regions of the Western United States. By collecting and analyzing data on vegetation, soil, and hydrology, this form helps to identify areas that meet the criteria for wetland designation, encompassing crucial details such as site characteristics, sampling points, and findings summary. For individuals or entities involved in land development or conservation projects, accurately completing this form is a critical step in ensuring compliance with environmental regulations. Click the button below to learn more about filling out the form.

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Arid West Wetland Determination Form PDF Details

The Arid West Wetland Determination Data Form represents a crucial tool designed for systematically evaluating and establishing the presence of wetland conditions within the arid regions of the Western United States. By meticulously capturing details ranging from basic project information, such as the site location, to more intricate data involving soil, vegetation, and hydrology, this form sets a foundation for accurate wetland assessment. It prompts the investigator to record observations about the project area, including landform, local relief, and slope, as well as more specific data like soil type, vegetation cover, and hydrological indicators. Moreover, it addresses the occurrence of natural disturbances or problematic conditions that might affect the wetland determination process. The inclusion of summary findings, along with a site map, enriches the form's utility as a comprehensive resource for environmental assessments. The detailed approach to documenting vegetation types, soil profile characteristics, and hydrological conditions underscores the rigorous standards applied to wetland identification in arid terrains, with a subtle emphasis on the relevant impacts of climatic and hydrologic variability typical of these regions. This document, delineated by the US Army Corps of Engineers, is not just a procedural formality but a vital instrument for ensuring responsible land use and conservation in areas where water resources are both scarce and critically important.

Question	Answer
Form Name	Arid West Wetland Determination Form
Form Length	2 pages
Fillable?	No
Fillable fields	0
Avg. time to fill out	30 sec
Other names	determination data arid, form west region, data arid west form, wetland determination form arid

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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

(If no, explain in Remarks.)

Are Vegetation

, Soil

, or Hydrology

significantly disturbed?

Are “Normal Circumstances” present?

Yes

Are Vegetation

, Soil

, or Hydrology

naturally problematic?

(If needed, explain any answers in Remarks.)

SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc.

Hydrophytic Vegetation Present?	Yes	No	Is the Sampled Area
Hydric Soil Present?	Yes	No	Is the Sampled Area
Hydric Soil Present?	Yes	No	within a Wetland?	Yes	No
Wetland Hydrology Present?	Yes	No	within a Wetland?	Yes	No
Wetland Hydrology Present?	Yes	No

Remarks:

VEGETATION – Use scientific names of plants.

Absolute

Dominant

Indicator

Dominance Test worksheet:

Tree Stratum

(Plot size:

)

% Cover

Species?

Status

Number of Dominant Species

(A)

That Are OBL, FACW, or FAC:

Total Number of Dominant

(B)

Species Across All Strata:

Percent of Dominant Species

= Total Cover

(A/B)

That Are OBL, FACW, or FAC:

Sapling/Shrub Stratum (Plot size:

)

Prevalence Index worksheet:

Total % Cover of:

Multiply by:

OBL species

x 1 =

FACW species

x 2 =

FAC species

x 3 =

Herb Stratum

(Plot size:

)

= Total Cover

FACU species

x 4 =

UPL species

x 5 =

Column Totals:

(A)

(B)

Prevalence Index = B/A =

Hydrophytic Vegetation Indicators:

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)

Woody Vine Stratum (Plot size:

)

= Total Cover

1Indicators of hydric soil and wetland hydrology must

be present, unless disturbed or problematic.

Hydrophytic

= Total Cover

Vegetation

% Bare Ground in Herb Stratum

% Cover of Biotic Crust

Present?

Yes

Remarks:

US Army Corps of Engineers

Arid West – Version 2.0

SOIL	Sampling Point:

Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)

Depth

Matrix

Redox Features

(inches)

Color (moist)

Type1

Loc2

Texture

Remarks

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)

Depleted Dark Surface (F7)

Thick Dark Surface (A12)

Redox Depressions (F8)

3Indicators of hydrophytic vegetation and

Sandy Mucky Mineral (S1)

Vernal Pools (F9)

wetland hydrology must be present,

Sandy Gleyed Matrix (S4)

unless disturbed or problematic.

Restrictive Layer (if present):

Type:

Depth (inches):

Hydric Soil Present? Yes

Remarks:

HYDROLOGY

Wetland Hydrology Indicators:

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)

High Water Table (A2)

Biotic Crust (B12)

Sediment Deposits (B2) (Riverine)

Saturation (A3)

Aquatic Invertebrates (B13)

Drift Deposits (B3) (Riverine)

Water Marks (B1) (Nonriverine)

Hydrogen Sulfide Odor (C1)

Drainage Patterns (B10)

Sediment Deposits (B2) (Nonriverine)

Oxidized Rhizospheres along Living Roots (C3)

Dry-Season Water Table (C2)

Drift Deposits (B3) (Nonriverine)

Presence of Reduced Iron (C4)

Crayfish Burrows (C8)

Surface Soil Cracks (B6)

Recent Iron Reduction in Tilled Soils (C6)

Saturation Visible on Aerial Imagery (C9)

Inundation Visible on Aerial Imagery (B7)

Thin Muck Surface (C7)

Shallow Aquitard (D3)

Water-Stained Leaves (B9)

Other (Explain in Remarks)

FAC-Neutral Test (D5)

Field Observations:

Surface Water Present?

Yes

Depth (inches):

Water Table Present?

Yes

Depth (inches):

Saturation Present?

Yes

Depth (inches):

Wetland Hydrology Present? Yes

(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

Arid West Wetland Determination Form – Fill Out and Use This PDF

Arid West Wetland Determination Form PDF Details

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