Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Cedar River IA 02-CED-477

from upper end of Nashua Impoundment (Chickasaw/Floyd county line (W line S7 T94N R14W Chickasaw Co.)) to Dam No. 2 at Charles City in NW 1/4 NE 1/4 S12 T95N R16W Floyd Co.

Assessments
Cycle
IR Category
2024
5
Pending
2022
5
2020
5
2018
5
2016
5
Legacy Assessments
Cycle
Overall
2014
Partial
2012
Not supporting
2010
Not supporting
2008
Not supporting
2006
Partial
2004
Partial
2002
Fully
2000
Threatened
1998
Threatened
1996
Threatened
1994
Threatened
1992
Fully
Details
Type
River
Segment ID
477
Segment Size
11.36 Miles
HUC8
07080201
Legacy ADBCode
IA 02-CED-0110_1
Designated Uses
  • Class A1
  • Class BWW1
  • Class HH
Segment Memos 1
Prior to the 2008 Section 305(b) cycle, this river 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, 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