A Geographic Information System to Support State-Wide Hydrologic Modeling with the SCS-TR-20by Robert M. Ragan, Univ of Maryland, College Park, United States,
Andrej J. Kosicki, Univ of Maryland, College Park, United States,
Abstract: A geographic information system (GIS) that is structured for hydrologic analyses has been installed in the Maryland State Highway Administration's (MSHA) Division of Bridge Design in Baltimore. The objective of the GIS is to improve the efficiency and quality of hydraulic design by providing the MSHA engineer with a desktop workstation build around an IBM AT or PS-2 that allows him or her to quickly assemble land cover, slope and soil data for any watershed in the State and then make the necessary interfaces to define the required input parameters and run the SCS family of hydrologic models for existing or proposed watershed conditions. The land cover, soil type and slope data bases are in raster formats referenced to individual USGS quads. Roadway and stream networks are managed in a vector format.
Subject Headings: Geographic information systems | Information systems | Hydrologic models | Highway and road design | Computer aided design | Hydraulic design | Hydraulic models | North America | United States | Maryland | South Carolina | Baltimore
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