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GIS Hydrology Tool for Basic Watershed Data

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008498.(doi:10.13031/2013.29630)
Authors:   Sonia M. Maassel Jacobsen, Colin A Niehus
Keywords:   Watershed delineation, GIS tool, hydrology, NRCS

USDA-NRCS recognizes the need to move into the 21st century with determinations of basic hydrology data that are used to design conservation practices. GIS specialists and engineers are working together to develop GIS tools that delineate a watershed, determine its longest hydraulic length, calculate average watershed slope, and develop a composite runoff curve number. This tool and its development are described and the steps for application are given.

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