Iowa DNR

Water Quality Assessments

Impaired Waters List

East Nodaway River IA 05-NOD-1391

mouth (S6 T67N R36W Page Co.) to confluence with Long Branch Cr at S17-18 line T70N R35W Taylor Co.

Assessment Cycle
Result Period
1994 - 1996
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 05-NOD-0030_1
Overall Use Support
Aquatic Life Use Support
Fish Consumption
Not assessed
Assessment Comments

Two stream use assessments in 1991.

Basis for Assessment

Used a review of the field sheets from the two 1991 DNR stream use assessments to upgrade the assessment of support of the Class B(WW) aquatic life uses from PS to FST due to (1) presence of good populations of the expected game fish species (channel catfish) at both locations, with flathead catfish also present at Hawleyville (YOY at both locations, abundant at Hawleyville; adults from 12 to 18" TL at Shambaugh), (2) presence of a majority of the expected fish taxa for streams in the Missouri River portion of the Southern Iowa Rolling Loess Prairies (47f) subecoregion at both locations (4 of 6 at Shambaugh; 6 of 6 at Hawleyville), (3) presence of the typical fish diversity (8 species from 3 families) at Shambaugh to exceptional diversity (15 species from 4 families) at Hawleyville, (4) habitat scores equal to, or better than, the overall median habitat score for DNR stream use asessments conducted from 1990-1995, and (5) lack of violations of Class B(WW) WQ criteria at the DNR quarterly WQ monitoring station near Shambaugh during 1992 and 1993.   Primary threats to continued support of the Class B(WW) uses include impacts of old channelization, streambank erosion, and siltation.

Monitoring and Methods
Assessment Key Dates
330 Fish surveys
375 Visual observation-- may not quantify some parameters-- single season-- by prof.
Monitoring Levels
Biological 3
Habitat 3
Physical Chemistry 0
Toxic 0
Pathogen Indicators 0
Other Health Indicators 0
Other Aquatic Life Indicators 0
# of Bio Sites 0
BioIntegrity N/A