Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Pilot Branch IA 05-NSH-1424

mouth (NW 1/4 S26 T73N R38W Montgomery Co.) to headwaters

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 05-NSH-0039_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Documentation
Assessment Comments

1996 biocriteria: IBI=30, 10 spp; 2 fams. 1996 Biocriteria: Fish IBI= 40 (fair), BM-IBI= 62 (good).

Basis for Assessment

Used results of the September 1996 DNR biocriteria sampling near Stennett to assess support of the general uses as FST due to (1) presence of a moderately diverse fish community for Loess Hills and Rolling Prairies subecoregion (10 spp., 2 fams), (2) presence of a majority of the regionally expected fish taxa (4 of 7), and lack of violations of Class B(LR) WQ criteria in the sample collected during biocriteria sampling.

Monitoring and Methods
Assessment Key Dates
9/9/1996 Biological Monitoring
Methods
330 Fish surveys
380 Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof
220 Non-fixed station physical/chemical monitoring (conventional pollutant only)
315 Regional reference site approach
320 Benthic macroinvertebrate surveys
Monitoring Levels
Biological 4
Habitat 4
Physical Chemistry 1
Toxic 0
Pathogen Indicators 0
Other Health Indicators 0
Other Aquatic Life Indicators 0
# of Bio Sites 0
BioIntegrity N/A