Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

2024 Assessment Summary - Category 4 - Water is impaired or threatened and a TMDL has been completed or is not needed

The waterbody is impaired but a TMDL is not required or a TMDL has already been completed. The waterbody is not included on the state’s section 303(d) list of impaired waters (Category 5 of the Integrated Report).

Note: Mouse over (or click on a mobile device) the icon for descriptions of those field values. Additional information can be found in the reference codex.
NS
Not Supported
PS
Partially Supported*
WINOFI
Water In Need of Further Investigation
*Prior to 2022 cycle. From 2022 onwards, it was dropped as there is no functional difference between Partially Supported and Not Supported.
A1
Recreation: Primary contact
A2
Recreation: Secondary contact
A3
Recreation: Children's contact
BCW1
Aquatic Life: Cold Water Type 1
BCW2
Aquatic Life: Cold Water Type 2
BLW
Aquatic Life: Lakes and wetlands
BWW1
Aquatic Life: Warm Water Type 1
BWW2
Aquatic Life: Warm Water Type 2
BWW3
Aquatic Life: Warm Water Type 3
C
Drinking Water
HH
Human Health
GenUse
General Use water
4a
Pollutant-caused impairment. TMDL has been completed.
4c
Non-pollutant caused impairment. No TMDL needed.
4d
Pollutant-caused fish kill. No TMDL needed and administrative action taken against responsible party.
Waterbody ADB Code Type Use Support Code Cause of Impairment Listing Info