• Organization: City of New York
• Updated: 2025-12-18

Citywide Outfalls

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

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...

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• Organization: City of Seattle
• Updated: 2026-02-17

This layer displays all outfalls within the City of Seattle (and the former service area north of the City limits) regardless of ownership.  Selected Maximo data are included.  Displays data from...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2024-04-09T00:00:00.000+00:00

CSO attributes and location information are from a variety of datasets for each state: Connecticut: Beginning with GIS data compiled by the Connecticut Department of Energy and Environmental...

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• 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: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-04-03T00:00:00.000+00:00

This dataset contains community structure of fish and macrobenthos, surveys of selected coral and fish assemblages, sediment monitoring, benthic faunal sampling, and fish census data from selected...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-08-08T00:00:00.000+00:00

This database shows the location of publicly owned treatment works, and other significant point source discharges to surface waters at or near the contiguous U.S. coastline. Three types of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2019-06-03T00:00:00.000+00:00

Penn Cove (in the Whidbey Basin) is designated as a category 5, 303d impaired water body due to low dissolved oxygen. In addition to runoff from adjacent developed and agricultural lands, treated...

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• Organization: Department of the Interior
• Updated: 2020-10-13T00:00:00Z

The prevalence of antibiotic resistance genes in microbial communities from sewage wastewater streams and from offshore marine sediments in the vicinity of sewage wastewater outfalls in Southeast...

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• Organization: Department of the Interior
• Updated: 2020-08-25T00:00:00Z

This tabular dataset represents monthly flow at 18 surface-water inflow points used as input into the Streamflow-Routing (SFR) Package for MODFLOW-One-Water Hydrologic Flow Model in the Rio Grande...

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• Organization: Department of the Interior
• Updated: 2020-08-25T00:00:00Z

This point vector dataset represents 18 surface-water inflow points used as input into the Streamflow-Routing (SFR) Package for MODFLOW-One-Water Hydrologic Flow Model in the Rio Grande...

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• Organization: Department of the Interior
• Updated: 2020-08-25T00:00:00Z

This tabular dataset represents the source of monthly flow at 18 surface-water inflow points used as input into the Streamflow-Routing (SFR) Package for MODFLOW-One-Water Hydrologic Flow Model in...

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• Organization: State of Maryland
• Updated: 2025-05-05

This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This dataset provides a digital geospatial representation of regulated facility outfalls using data derived...

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• Organization: City of Austin
• Updated: 2026-01-29

The document displays all the facilities in Harris County, Texas that have submitted a DMR. There are multiple lines for each facility due to outfalls and parameters. The spreadsheet is searchable...

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

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...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2021-05-14T00:00:00.000+00:00

This dataset consists of discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity, nutrients and dissolved oxygen during R/V John...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-04-15

Dataset includes water quality measurements from an urban stream and three municipal separate storm sewer system outfalls. Additional details provided in attached Dataset Description...

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• Organization: Department of the Interior
• Updated: 2022-08-10T00:00:00Z

Each year the U.S. Environmental Protection Agency (EPA) reports permit, location, and discharge information for facilities across the United States and its territories through the Discharge...

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• Organization: District of Columbia
• Updated: 2025-01-28T19:48:11.000Z

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 (EPA), documenting the...

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• Organization: District of Columbia
• Updated: 2025-01-28T19:48:11.000Z

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 (EPA), documenting the...

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