Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Iowa River IA 02-IOW-641

from confluence Timber Cr. (S3 T83N R17W Marshall Co.) to confluence with Asher Cr. in S27 T84N R18W Marshall Co.

Assessments
Cycle
IR Category
5
Pending
5
5
5
5
Legacy Assessments
Cycle
Overall
Not supporting
Not supporting
Not supporting
Not supporting
Partial
Partial
Partial
Partial
Partial
Details
Type
River
Segment ID
641
Segment Size
9.66 Miles
07080208
Legacy ADBCode
IA 02-IOW-0060_4
Designated Uses
  • Class A1
  • Class BWW1
  • Class HH
Segment Memos 1
Prior to the 2008 IR cycle, this segment had Class A primary contact recreation and Class B(WW) warmwater aquatic life (including fish consumption) designated uses. Due to changes in Iowa’s surface water classification approved by U.S. EPA in 2008, this segment now has Class A1 primary contact recreation, Class BWW1 warmwater aquatic life, and Class HH (human health/fish consumption) designated uses.
6/17/2020
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Water Monitoring Network
Fish Kills
BioNet Biological Assessment Sites
AQuIA Monitoring Sites