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Abstract
Development of a National Seamless Database of Topography and Hydrologic DerivativesTrack: Water Resources
Author(s): Dean J. Tyler, Sandra Franken, Kristine Verdin
Recent completion of the National Elevation Dataset (NED) has provided an avenue for nationwide development of topographically derived hydrologic data layers at 1:24,000 scale. This multilayer data set, entitled the National Elevation Dataset--Hydrologic Derivatives (NED-H), is being developed by a consortium of participants. Upon completion of the data set, terabytes of data will need to be stored, managed, and distributed. To facilitate browsing and, ultimately, delivery of the NED-H data, the data layers will be managed with ArcSDE, with ArcIMS providing browse and access to the data. This paper discusses the NED-H data layers as well as the procedures developed to load, manage, and distribute the data.
Dean J. Tyler
USGS/EROS Data Center
EROS Data Center
Mundt Federal Bldg
Sioux Falls, SD 57198
USA
Phone: 605-594-2624
E-mail: dtyler@usgs.gov