East Fork Des Moines River IA 04-EDM-1793
from confluence with Prairie Cr. (west line S18 T98N R29W Kossuth Co.) to confluence unnamed tributary SSW of Armstrong in S22 T98N R31W Emmet Co.
Assessment Comments
Assessment based on 2003 biocriteria data: FIBI = 45 (fair), BMIBI = 72 (good). Non-riffle FIBI BIC = 32; BMIBI BIC = 62.
Basis for Assessment
The assessment was based on data collected in 2003 as part of the DNR/UHL stream biocriteria project. The 2003 FIBI score was 45 (fair) and the BMIBI score was 72 (good). The aquatic life use support was assessed as fully supporting (= FS), based on a comparison of the FIBI and BMIBI scores with biological impairment criteria (BIC) established for previous Section 305(b) reports. The biological impairment criteria were determined from a statistical analysis of data collected at stream ecoregion reference sites from 1994-2004. The non-riffle FIBI BIC for this ecoregion is 32 and the BMIBI BIC for this ecoregion is 62.
Assessment Key Dates
| 8/21/2003 | Biological Monitoring |
Methods
| 220 | Non-fixed station physical/chemical monitoring (conventional pollutant only) |
| 315 | Regional reference site approach |
| 320 | Benthic macroinvertebrate surveys |
| 330 | Fish surveys |
| 380 | Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof |
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 | Good |