2002 · 12 citations · 0 references
Natural ResourcesEarth SciencesWatershed ManagementDigital Elevation ModelingHydrologic ModelingWatershed HydrologyCatchment AnalysisWatershed AssessmentWatershed DelineationWatershed FunctionWatershed ModelingDigital Elevation Model ProcessingGeographic Information System-based DelineationGeospatial Watershed AnalysisRemote Monitoring TechnologiesRemote Sensing In HydrologyRemote Sensing Of WatershedsWatershed Data AnalysisWatershed Management Planning
Many watershed analysis projects are limited by information available for modeling parameters of concern. For example, topographic information is often outdated or costly to obtain. This paper presents an example that explores the advantages of applying remote sensing technologies and GIS application for the delineation of a gauged watershed. Specifically, a watershed of as section of the Upper Pearl River in Mississippi was evaluated. The DEM data is available from USGS or developed through GIS can be imported into software such as HEC Geo-HMS and manipulated to give considerably accurate representations of stream flow paths and the contributing areas. The foremost advantage of these techniques is that only basic training is required before a person becomes fully functional in it. The delineated watershed and associated data can then be exported to other modeling software for watershed management.