Creating Hydrologic Unit Boundaries for Wyoming: A Semi-Automated Approach
Track: Water Resources
Author(s): Wendy L. Berelson, Paul Caffrey, Jeffrey D. Hamerlinck
This paper will describe the State-wide coordinated effort to develop the national Watershed Boundary Dataset (WBD) for Wyoming. The Spatial Data and Visualization Center at the University of Wyoming is using a customized ArcView approach to define hydrologic unit boundaries. The first phase of the process is semiautomated using National Elevation Dataset (NED)-derived watersheds created by EROS. These watersheds are used to create draft boundaries at 1:100,000 scale. The second phase of the process uses the DRG-Es (Digital Raster Graphics-Enhanced) as a backdrop for digitizing at 1:24,000 scale and the National Hydrography Dataset (NHD) as a reference for watershed naming.
Wendy L. Berelson
University of Wyoming
P.O. Box 4008
Laramie, WY 82071-4008