WebImpervious surfaces are areas where a portion of the land has been modified to reduce the land’s natural ability to absorb and hold rainfall. Environmental and permitting concerns need to be addressed as land development progresses. http://www.gishydro.eng.umd.edu/
Percent Impervious Area - US EPA
WebGIS - Viewer for Impervious Areas in the District GIS - Targeted Watersheds in the District Anacostia and Potomac River Monitoring Map Identify Your Watershed DC Water operates a wastewater collection system comprised of "separate" and "combined" sewers. WebInteractive Maps & GIS Data. ... a permit or other approval or authorization issued pursuant to the "Flood Hazard Area Control Act," P.L.1962, c. 19 (C.58:16A-50 et seq.). ... by the Highlands Council shall be either a brownfield site designated by DEP or a site at which at least 70% of the area thereof is covered with impervious surface. teptdata
ArcView GIS Extension for Estimating Curve Numbers - Esri
WebThe Impervious Surface Analysis Tool (ISAT), which is available as a geographic information system script, is used to calculate the percentage of impervious surface … WebDEP's Citywide Parcel-Based Impervious Area GIS Study NYC Open Data Skip to Main Content Sign In SearchSearch HomeData About Overview Dashboard Open Data Law … WebApr 11, 2024 · The flood vulnerability map was created using five spatial layers: land use/land cover, population density, distance to road, Global man-made impervious surface (GMIS), and Human built-up area settlement extent (HBASE). In addition, the results of the flood susceptibility and vulnerability maps were used to create a flood risk map. tep tanf