Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Walnut Creek IA 05-NSH-1450

from confluence with unnamed tributary at the S30/31 line in T73N R38W Montgomery Co. to confluence with unnamed tributary in S3 T76N R38W Pottawattamie Co.

Assessments
Legacy Assessments
Details
Type
River
Segment ID
1450
Segment Size
24.27 Miles
HUC8
10240002
HUC12
  • 102400020701
  • 102400020702
  • 102400020703
Legacy ADBCode
IA 05-NSH-0100_2
Designated Uses
  • Class A1 P
  • Class BWW2
PIndicates a Presumptive Use
Segment Memos 1
Prior to the 2008 IR cycle, this segment had only the Class B(LR) warmwater aquatic life designated use. Due to changes in Iowa’s surface water classification approved by U.S. EPA in 2008, this segment now has the presumptive Class A1 primary contact recreation designated use and the warmwater aquatic life designated use is now Class BWW2.
6/10/2020
Map
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Water Monitoring Network
Fish Kills
Recreation and Water Quality
BioNet Biological Assessment Sites
AQuIA Monitoring Sites