Report title: Watershed boundaries and digital elevation
model of Oklahoma derived from 1:100,000-scale digital topographic maps
Report number: OFR 95-727
Authors: Joel R. Cederstrand and Alan Rea
Abstract
This document provides a general description of the procedures
used to develop the data sets included on this compact disc. This
compact disc contains watershed boundaries for Oklahoma, a digital
elevation model, and other data sets derived from the digital
elevation model. The digital elevation model was produced using the
ANUDEM software package, written by Michael Hutchinson and licensed
from the Centre for Resource and Environmental Studies at The
Australian National University. Elevation data (hypsography) and
streams (hydrography) from digital versions of the U.S. Geological
Survey 1:100,000-scale topographic maps were used by the ANUDEM
package to produce a hydrologically conditioned digital elevation
model with a 60-meter cell size. This digital elevation model is well
suited for drainage-basin delineation using automated techniques.
Additional data sets include flow-direction, flow-accumulation,
and shaded-relief grids, all derived from the digital elevation model,
and the hydrography data set used in producing the digital elevation
model. The watershed boundaries derived from the digital elevation
model have been edited to be consistent with contours and streams from
the U.S. Geological Survey 1:100,000-scale topographic maps. The
watershed data set includes boundaries for 11-digit Hydrologic Unit
Codes (watersheds) within Oklahoma, and 8-digit Hydrologic Unit Codes
(cataloging units) outside Oklahoma. Cataloging-unit boundaries based
on 1:250,000-scale maps outside Oklahoma for the Arkansas, Red, and
White River basins are included. The other data sets cover Oklahoma,
and where available, portions of 1:100,000-scale quadrangles adjoining
Oklahoma.
http://ok.water.usgs.gov/abstracts/ofr95-727.html
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Last modified: Tue May 18 12:10:43 1999