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Stormwater - Regulatory (including Enforcement Actions) Information and Water...
This dataset looks at all aspects of storm water management in California as managed and regulated by the State Water Resources Control Board, from the Stormwater Multiple... -
MS4 Municipalities
Pennsylvania municipalities with NPDES MS4 permits or waivers, have been identified by the Pennsylvania Department of Environmental Protection. Attribute data indicates whether... -
i19 Stormwater Permitees Municipal
The feature datasets contain Phase 1 and Phase 2 municipal separate stormwater sewer system (MS4s) permittees in California. These draft layers are based on 2010 census data and... -
Municipal Stormwater Permit Outfall Data
Special Condition S8.D of the 2007-2012 Phase I Municipal Stormwater Permit required permittees to collect and analyze data to evaluate pollutant loadings of stormwater... -
i19 Stormwater Permitees Municipal
The feature datasets contain Phase 1 and Phase 2 municipal separate stormwater sewer system (MS4s) permittees in California. These draft layers are based on 2010 census data and... -
i19 Stormwater Permitees Municipal
The feature datasets contain Phase 1 and Phase 2 municipal separate stormwater sewer system (MS4s) permittees in California. These draft layers are based on 2010 census data and... -
Western Washington Hydrology Model (WWHM)
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers. -
i19 Stormwater Permitees Municipal
The feature datasets contain Phase 1 and Phase 2 municipal separate stormwater sewer system (MS4s) permittees in California. These draft layers are based on 2010 census data and... -
RSMP Illicit Discharge Detection and Elimination (IDDE)
Most Municipal Separate Storm Sewer System (MS4) permittees in the State of Washington are a part of the Regional Stormwater Monitoring Program (RSMP). One part of the RSMP is... -
MS4 Sewer Shed
The dataset contains locations and attributes of the drainage areas of MS4 outfalls.