Iowa DNR
ADBNet

Water Quality Assessments

Impaired Waters List

2018 Assessment Summary - WINOFI - Waters In Need Of Further Investigation

The state list of waters in need of further investigation is required by Iowa's Credible Data Law and is comprised of waters in category 3b of Iowa's Integrated Report. WINOFI waters are those where limited information suggests, but does not conclusively demonstrate, a water quality impairment.

The Support column indicates the support level of the designated use for the segment. Where a "Not Supported" or "Partially Supported" is displayed, the use is impaired for one or more other causes.

For purposes of Integrated Reporting to USEPA, Iowa DNR's 3b subcategory is considered part of overall IR Category 3: "Not Assessed" due to insufficient information for determining whether any use is met.

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
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
3b
Use potentially impaired based on an evaluated assessment.
3b-c
Use potentially biologically impaired based on calibrated IBI metrics.
3b-u
Use potentially biologically impaired based on uncalibrated IBI metrics.
Waterbody ADB Code Type Use Support Code Cause of Impairment Listing Info