• Organization: U.S. Environmental Protection Agency
• Updated: 2012-04-24T00:00:00.000+00:00

This data layer identifies the locations of Combined sewer overflow outfalls. Combined sewer systems are sewers that are designed to collect rainwater runoff, domestic sewage, and industrial...

• Organization: State of New York
• Updated: 2022-08-24

The dataset represents the locations of combined sewer overflow (CSOs) outfall locations in NYS. It also includes overflow detection capabilities of CSO communities and overflow frequency data...

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• Organization: Department of the Interior
• Updated: 2022-08-05T00:00:00Z

The detrimental effects of excess nutrients and sediment entering the Chesapeake Bay estuary from its watersheds have necessitated regulatory actions. Federally-mandated reductions are apportioned...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2018-08-06

Output from three different scenarios generated using stormwater management planning support software to reduce occurrence of combined sewer overflow events through the use of green...

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• Organization: City of Seattle
• Updated: 2024-05-13

This layer indicates which areas contribute sanitary and storm water flow to a CSO overflow point. Areas are broken down by NPDES Outfall Number.  The data source is DWW.cso_basin_plgn_pv. The...

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• Organization: City of Seattle
• Updated: 2026-02-04

Primarily supports the permanent Combined Sewer Overflow monitoring locations network to determine the beginning and ending of rainfall events and calculate rainfall depth.  Also, supports other...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-05-19

The project entailed deployment of an on-site on-demand peracetic acid (PAA) disinfectant pilot system at a combined sewer storage facility in Akron, OH (Akron Rack 40). The pilot system was...

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• Organization: District of Columbia
• Updated: 2026-02-06T00:00:00.000Z

DC Water operates a wastewater collection system comprised of "separate" and "combined" sewers. Approximately two-thirds of the District is served by a separate sewer system, while the remaining...

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• Organization: District of Columbia
• Updated: 2026-02-06T00:00:00.000Z

DC Water operates a wastewater collection system comprised of "separate" and "combined" sewers. Approximately two-thirds of the District is served by a separate sewer system, while the remaining...

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• Organization: City of Seattle
• Updated: 2026-02-09

The RainWise program helps eligible property owners manage stormwater by installing rain gardens and/or cisterns on private property. The program is jointly funded by King County and SPU as part...

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• Organization: Department of the Interior
• Updated: 2022-07-20T00:00:00Z

In cooperation with the New York City Department of Environmental Protection (NYC DEP), the U.S. Geological Survey (USGS) collected water and bed sediment samples along Alley Creek (Queens, New...

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