17 datasets found
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Identify Your Watershed and Sewer System Area App
District of Columbia —
This app displays a series of general information for an address, location, or where the user clicks in DC. Some information returned are:Municipal Separate Storm... -
2024 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
2022 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
State
Western Washington Hydrology Model (WWHM)
State of Washington —
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers. -
MS4 Storm Sewer Outfalls
District of Columbia —
The dataset contains locations and attributes of the MS4 outfalls created as part of the Federal MS4 Permit. GPS outfall locations were captured by DC Water, then DC... -
County
Environmentally Sensitive Areas
Fairfax County, Virginia —
This polygon dataset is composed of subsets from Fairfax County’s current soil inventory, recorded floodplain, and Resource Protection Area (RPAs) layers. Layer... -
MS4 Sewer Shed
District of Columbia —
The dataset contains locations and attributes of the drainage areas of MS4 outfalls. -
2019 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
State
i19 Stormwater Permitees Municipal
State of California —
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... -
2023 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
2020 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
MS4 Sewer Shed Single Polygon
District of Columbia —
Retired September 28, 2023. District MS4 Sewershed drainage areas. The dataset contains locations and attributes of the drainage areas of MS4 outfalls created as part... -
DC Subwatersheds
District of Columbia —
This layer depicts the conglomeration of the 4 layers used for TMDLs. It contains TMDL Subsheds, Direct Drain Overland (not piped), Direct Drain Sewersheds (piped),... -
State
Municipal Stormwater Permit Outfall Data
State of Washington —
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... -
2021 MS4 Annual Report
District of Columbia —
What is the MS4 Annual Report?Every year, the District submits an Annual Municipal Separate Storm Sewer System (MS4) Report to the U.S. Environmental Protection Agency... -
State
Stormwater - Regulatory (including Enforcement Actions) Information and Water Quality Results
State of California —
This dataset looks at all aspects of storm water management in California as managed and regulated by the State Water Resources Control Board, from theStateWestern Washington Hydrology Model (WWHM)
State of Washington —
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers.17 datasets found