Iowa DNR
Iowa DNR

ADBNet

Water Quality Assessments
Impaired Waters List

Little Rock River IA 06-BSR-1800

from confluence with Argo Slough (S17 T99N R43W Lyon Co.) to the Iowa/Minnesota state line

Details
Type
River
Segment ID
1800
Segment Size
16.64 Miles
10170204
HUC12
  • 101702040603
Legacy ADBCode
IA 06-BSR-0060_3
Designated Uses
  • Class A1
  • Class BWW2
Segment Memos 1
Prior to the 2008 Section 305(b) cycle, this stream segment was designated only for Class B(LR) aquatic life uses. Due to changes in Iowa’s surface water classification that were approved by U.S. EPA in February 2008, this segment is now presumptively designated for Class A1 (primary contact recreation) uses. The stream remains designated for aquatic life uses (now termed Class B(WW2) aquatic life uses). Prior to the 2016 Section 305(b) cycle, this segment was designated presumptively for Class A1 (primary contact recreation) uses. Due to changes in Iowa’s surface water classification that were approved by then Iowa Department of Natural Resources on June 17, 2015, this segment is now designated as Class A1 (primary contact recreation) uses and no longer considered as presumptive.
7/30/2019
Map
Click on a map element for more information.
Water Monitoring Network
Fish Kills
Recreation and Water Quality
BioNet Biological Assessment Sites
AQuIA Monitoring Sites