Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Thompson River IA 05-GRA-1351

from the Iowa/Missouri state line to confluence with Long Cr. in SW 1/4 S8 T69N R26W Decatur Co.

Assessments
Cycle
IR Category
5
Pending
5
5
5
5
Legacy Assessments
Cycle
Overall
Not supporting
Not supporting
Not supporting
Not supporting
Not supporting
Not supporting
Threatened
Fully
Fully
Threatened
Threatened
Details
Type
River
Segment ID
1351
Segment Size
28.97 Miles
10280102
Legacy ADBCode
IA 05-GRA-0040_0
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