Geographic Information System/Watershed Model Interfaceby Gary T. Fisher, US Geological Survey, United States,
Abstract: Geographic information systems allow for the interactive analysis of spatial data related to water-resources investigations. A conceptual design for an interface between a geographic information system and a watershed model includes functions for the estimation of model parameter values. Design criteria include ease of use, minimal equipment requirements, a generic data-base management system, and use of a macro language. An application is demonstrated for a 90.1-square-kilometer subbasin of the Patuxent River near Unity, Maryland, that performs automated derivation of watershed parameters for hydrologic modeling.
Subject Headings: Geographic information systems | Information systems | Watersheds | Hydrologic models | Mathematical models | Parameters (statistics) | Spatial data | North America | Maryland | United States
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