Iowa DNR

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.

2016 Final
Legacy Assessments
2014 Final
2012 Final
2010 Final
2008 Final
2006 Final
2004 Final
2002 Final
2000 Final
1998 Final
Waterbody Type Segment ID Segment Size HUC8
River 641 9.66 Miles 07080208
Legacy ADBCode:
IA 02-IOW-0060_4
No notes recorded.
Use Designations
  • Class A1 Recreation : Primary contact
  • Class B(WW-1) Aquatic Life : Warm Water Type 1
  • Class HH Human Health
Water Monitoring Network
Fish Kills
BioNet Monitoring Sites
AQuIA Monitoring Sites