Extraction of Terrain Features from Digital Elevation Models

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by Curtis V. Price, US Geological Survey, United States,
David M. Wolock, US Geological Survey, United States,
Mark A. Ayers, US Geological Survey, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: Digital elevation models (DEMs) are being used to determine variable inputs for hydrologic models in the Delaware River basin. Recently developed software for analysis of DEMs has been applied to watershed and streamline delineation. The results compare favorably with similar delineations taken from topographic maps. Additionally, output from this software has been used to extract other hydrologic information from the DEM, including flow direction, channel location, and an index describing the slope and shape of a watershed.

Subject Headings: Terrain models | Watersheds | Hydrologic models | Computer software | Mapping | Computer models | Channel flow | Hydraulic models | North America | Delaware | United States

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