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Find a Commonwealth ResourceVirginia Department of Environmental Quality
The Stormwater Construction General Permit layer is a spatial representation of the locations for which a General Virginia Pollutant Discharge Elimination System (VPDES) Permit for Discharges of Stormwater from…
Updated Nov 4, 2026
Loudoun County
The stormwater structures data is comprised of points (inlets, manholes, pipe ends, culvert ends, and control devices). The pipe and culvert point structures, typically one at each end of the pipe/culvert line, include…
Updated Oct 10, 2026
Loudoun County
The stormwater BMP data is comprised of points (dry ponds, wet ponds, underground detention, etc.). These points identify the general location of BMPs within Loudoun County, Virginia, and provide infomation about the…
Updated Oct 10, 2026
Hampton Roads PDC & Hampton Roads TPO
This file depicts the 11 Phase I and Phase II MS4s (Municipal Separate Storm Sewer System) in Hampton Roads, within the Chesapeake Bay watershed. Data compiled in 2018, reflects delineated service areas between 2015 and…
Updated Oct 6, 2026
