Found 9 datasets matching filters.
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The dataset contains locations and attributes of the MS4 Storm Sewer outfalls created as part of the District MS4 Permit. GPS outfall locations were captured in 2004-2006 by, then, DC WASA. A...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: May 05, 2026 at 10:39 PM -
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), and Combined Sewer (CSS)...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 05, 2026 at 10:34 PM -
This layer depicts a generalized boundary of the District’s Municipal Separate Storm Sewer System (MS4) drainage areas. Each sewershed shows the general drainage area of a system of pipes and...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 05, 2026 at 10:39 PM -
This layer depicts a generalized boundary of the District’s Municipal Separate Storm Sewer System (MS4) drainage areas. Each sewershed shows the general drainage area of a system of pipes and...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 10:39 PM -
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 Application and...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: April 27, 2026 at 07:48 PM -
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 discharged from different...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: November 21, 2025 at 11:23 PM -
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 they have not been...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: July 28, 2025 at 07:10 PM -
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: November 21, 2025 at 11:23 PM -
This dataset includes versions of the WWHM as they are released, including installation files and descriptions of changes along with dates and version numbers.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: November 21, 2025 at 11:23 PM
