Lotts Creek IA 05-GRA-1376
IA/MO line (S24 TT67N R29W Ringgold Co.) to confluence with Tuckers Cr. in S12 T67N R29W Ringgold Co.
Assessment Comments
Assessment based on 2003 biocriteria data: FIBI = 21 (poor), BMIBI = 50 (fair). FIBI BIC = 33; BMIBI BIC = 41.
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 21 (poor) and the BMIBI score was 50 (fair). The aquatic life use support was assessed as partially supporting (= PS), 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 FIBI BIC for this ecoregion is 33 and the BMIBI BIC for this ecoregion is 41.
Assessment Key Dates
| 7/18/2003 | 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 | Fair |
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Cause Unknown | Aquatic Life Support | Slight |
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| Cause Unknown | Overall Use Support | Slight |
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