EPA/600/C-13/148
                                                                                       ARS/296053
                                The Automated Geospatial
                                Watershed Assessment Tool Version 3.0
WHAT IS AGWA?
The  Automated Geospatial  Watershed Assessment
(AGWA) tool  is an  interface designed to run two
watershed runoff and erosion models:  the Kinematic
Runoff and Erosion (KINEROS) model, and the Soil and
Water  Assessment Tool (SWAT). The  interface was
developed in a geographic information system (CIS) to
facilitate the  preparation of model  inputs, and the
visualization of model outputs.
HOW CAN AGWA HELP WITH TMDLS?
    Locating potential impairment
    -  AGWA  can  quickly and  inexpensively identify
      and prioritize problem areas at the basin and
      watershed scales
    Evaluating the  impacts of land-use change
    -  AGWA   can  evaluate   where  water-quality
      impacts of  past and  future landscape change
      are most significant
    -  AGWA  includes a land-cover modification tool
      to assist with scenario development
    Mapping results
    -  All model outputs for both streams and upland
      areas can be mapped to facilitate comparisons
      with  other data layers and the presentation of
      results
WHERE CAN I GET AGWA?
AGWA example  datasets,  training exercises,  and
documentation can be downloaded via the  Internet
free of charge from:
           www.tucson.ars.ag.gov/agwa
                      or
       www.epa.gov/nerlesdl/land-sci/agwa
                                                            AGWA Inputs and Outputs
Digital Elevation
Model
Model Elements
                      1
     Delineate and
     discretize watershed
                           Intersect model
                           elements with:
                                   Land Cover
                                   Precipitation
Results
                           Execute model and
                           import results
                                                  Output variables that can be displayed in AGWA.
                                                  KINEROS
Infiltration (mm, m3/km)
Infiltration (in, ac-ft/mi)
Runoff (mm, m3)
Peak flow (m3/s, mm/hr)
Sediment yield (kg/ha)
Channel scour (mm/m2)
Sediment discharge (kg/s)
Erosion (depth/area)
                                                                        SWAT
Precipitation (mm)
ET(mm)
Percolation (mm)
Surface runoff (mm)
Transmission loss (mm)
Sediment Yield (t/ha)
Water Yield (mm)
Nitrate (kg N/ha)
Phosphorous (kg P/ha)
                   USDA
                     United States
                     Environmental Protection
                     Agency

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                                                                                       EPA/600/C-13/148

                                                                                            ARS/296053
SYSTEM REQUIRMENTS
There are currently several versions of AGWA available:
AGWA 1.5 for Environmental Systems Research Institute
(ESRI) ArcView 3.x, AGWA 2.x for ESRI ArcGIS 9.x, and
AGWA 3.X for ESRI ArcGIS 10.x. In addition to ArcView
3.x, ArcGIS  9.x,  or ArcGIS  10.x,  AGWA requires the
Spatial   Analyst  extension  corresponding  to  the
respective   software   platform.   Minimum   system
requirements for all versions of AGWA are defined  by
the minimum system requirements for their respective
software platforms.
FOR FURTHER  INFORMATION
U.S. EPA/ORD/NERL
Landscape Ecology Branch
William Kepner (kepner.william@epa.gov)

USDA-ARS
Southwest Watershed Research Center
David Goodrich (dave.goodrich@ars.usda.gov)
 ssp
      -1.617-1.33
      1.33-4.278
      4.278-7,225
 AV7.225-10.173
 A/10.173-13.12
 A/13.12-16.068
 A/16,068-19,015
 A/19.015-21,963
 A/21.963-24.91
      Ha Data

      -2.729-3.13
      3.13-8.389
      8.889 - 14.847
     | 14,847 - 20,706
     i) 20.706 - 26.565
      25.565 - 32.424
      32.424 - 38.232
      38.282-44.141
      44.141-50
      No Data

 5  0  S 10 
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