Gis based hydrologic modeling the automated geospatial watershed assessment tool
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GIS-BASED HYDROLOGIC MODELING: THE AUTOMATED GEOSPATIAL WATERSHED ASSESSMENT TOOL PowerPoint PPT Presentation


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GIS-BASED HYDROLOGIC MODELING: THE AUTOMATED GEOSPATIAL WATERSHED ASSESSMENT TOOL. Bill Kepner and Darius Semmens US – EPA Landscape Ecology Branch Las Vegas, NV David Goodrich, Mariano Hernandez, Shea Burns, Averill Cate, Soren Scott, Lainie Levick, Evan Canfield

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GIS-BASED HYDROLOGIC MODELING: THE AUTOMATED GEOSPATIAL WATERSHED ASSESSMENT TOOL

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Gis based hydrologic modeling the automated geospatial watershed assessment tool

GIS-BASED HYDROLOGIC MODELING:THE AUTOMATED GEOSPATIAL WATERSHED ASSESSMENT TOOL

Bill Kepner and Darius Semmens

US – EPA Landscape Ecology Branch Las Vegas, NV

David Goodrich, Mariano Hernandez, Shea Burns, Averill Cate, Soren Scott, Lainie Levick, Evan Canfield

USDA-ARS Southwest Watershed Research Center, Tucson, AZ

Phillip Guertin

University of Arizona, Tucson, AZ

Scott Miller

University of Wyoming, Laramie, WY


Introduction

Introduction

  • PC-based GIS tool for watershed modeling

    • KINEROS & SWAT (modular)

  • Investigate the impacts of land-use/cover change on runoff, erosion, and water quality at multiple scales

  • Compare and visualize results

  • Targeted for use by research scientists and management specialists

  • Analyses can be integrated with those from other GIS- based tools & data

  • Widely applicable & free


Objectives of the agwa tool

Objectives of the AGWA tool

  • Compatible with US-EPA Analytical Tool Interface for Landscape Assessment (ATtILA)

  • Simple, direct method for model parameterization

  • Provide accurate, repeatable results

  • Utilize basic, commonly available GIS data

  • Assess impacts of land-use/cover change

  • Useful for scenario development, alternative futures simulation work (forecasted change)


Gis based hydrologic modeling the automated geospatial watershed assessment tool

KINEROS Outputs

SWAT Outputs

Channel Infiltration (m3/km)

Precipitation (mm)

Plane Infiltration (mm)

ET (mm)

Runoff (mm or m3)

Percolation (mm)

Sediment yield (kg)

Channel Disch. (m3/day)

Peak flow (m3/s or mm/hr)

Transmission loss (mm)

Channel Scour (mm)

Water yield (mm)

Sediment discharge (kg/s)

Sediment yield (t/ha)

AGWA Conceptual Design: Inputs and Outputs

Watershed Delineation using Digital Elevation Model (DEM)

Watershed Discretization

(model elements)

Intersect model elements with

+

Soils

Land

Cover

Output results that can be displayed in AGWA

Rain

(Observed or Design Storm)

Run model and import results

Results


Spatial and temporal scaling of results

High urban growth

1973-1997

Sierra Vista Subwatershed

KINEROS Results

Concentrated urbanization

ARIZONA

Phoenix

#

Tucson

#

SONORA

Forest

Oak Woodland

Mesquite

Desertscrub

Grassland

Urban

1997 Land Cover

  • Using SWAT and KINEROS for integrated watershed assessment

  • Land-cover change analysis and impact on hydrologic response

Spatial and Temporal Scaling of Results

Upper San Pedro

River Basin

N

Water yield change between 1973 and 1997

<<WY >>WY

SWAT Results


Gis based hydrologic modeling the automated geospatial watershed assessment tool

Land-Cover Modification Tool

  • Allows users to build and test management scenarios

  • Location of land-cover alterations specified by either drawing a polygon on the display, or specifying a polygon map

  • Types of Land-Cover Changes:

  • Change entire user-defined area to new land cover

  • Change one land-cover type to another in user-defined area

  • Change land-cover type within user-supplied polygon map

  • Create a random land-cover pattern

    • e.g. simulated burn pattern

  • Example of land-cover change (mesquite removal) and associated hydrologic impacts


Agwa applications

AGWA Applications

  • Engineering design – optimizing placement and sizing of retention basins for storm-water recharge to capture excess flows resulting from urbanization

  • Planning – hydrologic impacts of alternative growth scenarios

  • TMDLs – locating potential impairment (cheap & quick)


Gis based hydrologic modeling the automated geospatial watershed assessment tool

Integration of AGWA and ATtILA

  • Exploits landscape characterization functionality of ATtILA to improve parameterization of SWAT in AGWA

  • Incorporates outputs (e.g. sediment yield) from AGWA back into landscape metric assessments

  • Examples from Arizona (Hernandez et al., 2003) and Oregon (in progress)

Hernandez et al., 2003, Integrating a landscape/hydrologic analysis for watershed assessment. Proceedings of the First Interagency Conference on Research in the Watersheds, Benson, AZ October 27-30, 2003.


Gis based hydrologic modeling the automated geospatial watershed assessment tool

AGWA Milestones

  • AGWA 1.1 released at the Fed. Interagency Hydrologic Modeling Conference, July 2002.

  • AGWA was added to the new ORD Council for Regulatory Environmental Modeling (CREM) database in January, 2004

  • AGWA 1.4 released in July, 2004

  • AGWA was exhibited as a TMDL tool at the 2004 EPA Science Forum Product Expo

  • AGWA was integrated into the BASINS 3.1 release

  • in August, 2004

  • Training: Las Vegas (2001); Reston (2002); Tucson (2003); San Diego (2004); India (2005); Bulgaria (2005)

  • 850 registered users – April 2005


Key improvements for national application

Key Improvements for National Application

AGWA/BASINS Integration

  • Elevation bands for SWAT

  • SSURGO soil parameterization for SWAT

  • Enhanced ground-water parameterization for SWAT

  • Multiple hydraulic-geometry relations for channel characterization

  • Land-Cover Modification Tool – scenario development

  • Reservoirs (SWAT), and ponds (KINEROS)

  • FAO Soils – transborder applications


Applications

Applications

  • National

    • NYCDEP – Catskill/Delaware

    • USDA-ARS & Upper San Pedro Partnership – Arizona

    • EMAP – Oregon (AGWA-ATtILA)

    • ReVA – SEQL

    • Region 10 – Kenai Peninsula, Alaska

  • International

    • NATO – Committee on the Challenges to Modern Society (CCMS)

    • Southwest Consortium for Environmental Research and Policy (SCERP) – U.S./Mexico

    • UNESCO – Global Network for Water and Development Information (G-WADI)


Gis based hydrologic modeling the automated geospatial watershed assessment tool

AGWA Support & Distribution

  • Research Plan

  • Code structure diagrams

  • Training exercises (4)

  • Data (FAO soil, NWS gauge, & training exercise data)

  • Journal Publications (e.g. Hernandez et al. 2000, Miller et al. 2002a, Miller et al. 2002b, Kepner et al. 2004, Semmens & Goodrich 2005; Goodrich et al. 2005)

  • Community Bulletin Board

  • All available on EPA and USDA/ARS companion Websites:

  • Fact Sheets, Product Announcement, Brochures

  • Documentation and User Manuals for AGWA and BASINS-AGWA (html & pdf)

  • Quality Assurance Report

http://www.epa.gov/nerlesd1/land-sci/agwa/

http://www.tucson.ars.ag.gov/agwa/


Future directions

Future Directions

Migrating to ArcGIS (AGWA 2.0) and the Internet (DotAGWA)

  • Detailed, peer reviewed design plan completed March, 2005

  • Compatible with plans for BASINS and ATtILA

  • Developed using standards-based technology allowing AGWA components to be utilized by other applications and visa versa

  • Facilitates integration of other models/tools


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