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United States Department of Agriculture

Agricultural Research Service

Title: Wepp Watershed Modeling Using Arc View 3.0 (Gis)

Authors
item Cochrane, Thomas - PURDUE UNIV. W.LAFAYETTE
item Flanagan, Dennis
item Norton, Lloyd
item Engel, B - PURDUE UNIV, W. LAFAYETTE

Submitted to: American Society of Agronomy
Publication Type: Abstract Only
Publication Acceptance Date: October 26, 1997
Publication Date: N/A

Technical Abstract: Many individuals, government agencies, and private consulting firms are using the Arc View geographical information system to manage and analyze spatial data such as soil maps, digital elevation models (DEMs), and land use maps. With the implementation of new grid-based routines in Arc View 3.0**s Spatial Analyst, it has become possible to program complex grid- based routines that can be used to then create new extensions for Arc View. In the work presented here, such an extension was created that allows users that have data stored as digital (GIS) maps to run the Water Erosion Prediction Project (WEPP) watershed erosion model. Data from user-supplied DEMs are processed to generate information pertinent to a selected watershed, such as concentrated flow locations, hillslopes, slope profiles, and surface area. Other maps such as soils, climate, and management are also analyzed, and WEPP input files created. After all WEPP inputs have been generated the model is run and water erosion results are presented numerically and as map coverages. This WEPP GIS extension enables a user to efficiently analyze and report on the impact of different management scenarios on water erosion within and sediment delivery from a watershed.

Last Modified: 10/21/2014
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