Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Long Creek IA 05-GRA-1364

mouth (S8 T69N R28W Decatur Co.) to confluence with East Long Cr. in S36 T71N R27W Clarke Co.

Assessment Cycle
2002
Result Period
1998 - 2000
Designations
Assessment Methodology
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 05-GRA-0120_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Documentation
Assessment Comments

Assessment based on 2001 biocriteria data: Fish IBI= 38 (fair), BM-IBI= 48 (fair).

Basis for Assessment

The assessment was based on data collected in 2001 as part of the DNR/UHL stream biocriteria project.  The 2001 Fish IBI score was 38 (fair) and the BM-IBI score was 48 (fair).  The aquatic life use support was assessed as fully supported / threatened (=FST), based on a comparison of the F-IBI and BM-IBI scores with biological assessment criteria established specifically for the 2002 Section 305(b) report.  The biological assessment criteria were determined from a statistical analysis of data collected at stream ecoregion reference sites from 1994-2001.

Monitoring and Methods
Assessment Key Dates
10/11/2001 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 1
BioIntegrity Fair