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http://dx.doi.org/10.5389/KSAE.2007.49.5.081

Web-based GIS for Real Time Hydrologic Topographical Data Extraction for the Geum River Watershed in Korea  

Nam, Won-Ho (Dept. of Rural Systems Engineering, Seoul National University)
Choi, Jin-Yong (Dept. of Rural Systems Engineering, Seoul National University)
Jang, Min-Won (Research Institute for Agriculture & Life Science)
Engel, B.A. (Dept. of Agricultural and Biological Engineering, Purdue University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.49, no.5, 2007 , pp. 81-90 More about this Journal
Abstract
Watershed topographical information is required in hydrologic analysis, supporting efficient hydrologic model operation and managing water resources. Watershed topographical data extraction systems based on desktop GIS are abundant these days placing burdens for spatial data processing on users. This paper describes development of a Web-based Geographic Information Systems that can delineate the Geum River sub-basins and extract watershed topographical data in real time. Through this system, users can obtain a watershed boundary by selecting outlet location and then extracting topographical data including watershed area, boundary length, average altitude, slope distribution about the elevation range with Web browsers. Moreover, the system provides watershed hydrological data including land use, soil types, soil drainage conditions, and NRCS(Natural Resources Conservation Service) curve number for hydrologic model operation through grid overlay technique. The system operability was evaluated with the hydrological data of WAMIS(Water Management Information System) with the government operation Web site as reference data.
Keywords
Web-based Geographic Information System; World Wide Web; Watershed Delineation; Hydrologic Topographical Data;
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Times Cited By KSCI : 1  (Citation Analysis)
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