Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Iowa Assessment Unit Map

Click on an assessment unit for more information.

Map Map Legend

Segments

Non-River Segments

River segments

Large Lake Segment Extent
Segments
Non-River Segments
River segments
20 mi
Esri, USGS | County of Story, Iowa DNR, Esri, TomTom, Garmin, FAO, NOAA, USGS, EPA, NPS, USFWS | Iowa Department of Natural Resources
Powered by Esri
Click on a map element for more information.