West Branch One Hundred And Two River IA 05-PLA-1480
mouth (NW 1/4 S10 T68N R35W Taylor Co.) to confluence with Middle Branch One Hundred and Two R. in S6 T69N R34W Taylor Co.
Assessment Comments
Assessment is based on 1995 Biocriteria sampling: Fish IBI= 27(fair), BM-IBI= 45 (fair).
Basis for Assessment
SUMMARY: The Class B(WW) aquatic life uses remain assessed as "partially supported." The assessment category, however, is changed from "monitored" to "evaluated." Fish consumption uses remain "not assessed." EXPLANATION: Continue to use the assessment developed for the 1998 report that was based on results of the 1995 IDNR biocriteria assessment. However, because these data are now considered too old (greater than five years) to accurately characterize current water quality conditions, the assessment category is changed from "monitored" (indicating an assessment with relatively high confidence) to "evaluated" (indicating an assessment with relatively low confidence). Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this stream segment.
Assessment Key Dates
| 10/11/1995 | 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 | 3 |
| Habitat | 3 |
| Physical Chemistry | 0 |
| 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 |
|---|---|---|---|---|
| Nutrients | Overall Use Support | Moderate |
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| Nutrients | Aquatic Life Support | Moderate |
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| Other habitat alterations | Overall Use Support | Moderate |
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| Other habitat alterations | Aquatic Life Support | Moderate |
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