Iowa DNR
ADBNet

Water Quality Assessments

Impaired Waters List

West Nishnabotna River IA 05-NSH-1441

from confluence with Silver Cr. (S21 T71N R41W Mills Co.) to confluence Farm Cr. in S9 T73N R40W Mills Co.

Assessments
Cycle
IR Category
5
Pending
5
5
5
5
Legacy Assessments
2014
2012
2010
2008
2006
2004
2002
2000
1998
1996
1994
Details
Type
River
Segment ID
1441
Segment Size
17.44 Miles
10240002
Legacy ADBCode
IA 05-NSH-0080_1
Designated Uses
  • Class A1
  • Class BWW1
  • Class HH
Segment Memos 1 memos
Prior to the 2008 Section 305(b) cycle, this stream segment was designated only for Class B(WW) aquatic life uses, including fish consumption uses. Due to changes in Iowa’s surface water classification that were approved by U.S. EPA in February 2008, and due to the completion of a Use Attainability Analysis in 2007, this segment is also now designated for Class A1 (primary contact recreation) uses. This segment remains designated for warmwater aquatic life use (now termed Class B(WW1) uses), and for fish consumption uses (now termed Class HH (human health/fish consumption uses).
11/21/2018
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Water Monitoring Network
Fish Kills
BioNet Biological Assessment Sites
AQuIA Monitoring Sites