Category: Hydrology

ATTAINS Assessed Waters (303(d) and Water Quality Assessments)

U.S. EPA

Commercial
Yes
Format
Several
Coverage
United States
Last updated
Added to findgis 29 Oct 2026 · Update frequency Continuous

The EPA record holds water-quality assessments and 303(d) impairment listings.

Preview map of ATTAINS Assessed Waters (303(d) and Water Quality Assessments)
Map image: U.S. EPA · Basemap: Natural Earth

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Source and attribution

Publisher
U.S. EPA
License
Public domain
Commercial use
Yes
Attribution required
No
Modification allowed
See publisher
Redistribution allowed
See publisher
Share-alike
No
U.S. Government work; public domain
Type
Vector
Extent
-179.217.6-64.571.4West, south, east, north. Approximate region extent.

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