Odebolt Creek IA 06-LSR-1592
mouth (NE 1/4 S15 T87N R40W Ida Co.) to confluence with unnamed tributary in S24 T87N R39W Ida Co.
Assessment Comments
1997 bioassessments (dstr->upstr): (fish) 13 spp., 5 fams.; 10 spp., 4 fams.; Fish IBI= 39(fair), 35(fair); BM-IBI= 57(good), 57(good).
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses remain assessed as "fully supported / threatened" (minor impacts). EXPLANATION: The aquatic life uses remain assessed as "fully supported / threatened" based on results of the IDNR/UHL biocriteria monitoring conducted on this stream segment in 1997 (see assessment for the 2000 report). These data are less than five years old and, according to IDNR's methodology for Section 305(b) assessments, are thus appropriate for characterizing current water quality conditions.
Assessment Key Dates
| 8/19/1997 | 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 | 2 |
| BioIntegrity | Fair |
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Metals | Overall Use Support | Not Impairing |
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| Metals | Aquatic Life Support | Not Impairing |
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| Nutrients | Overall Use Support | Not Impairing |
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| Nutrients | Aquatic Life Support | Not Impairing |
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| Oil and grease | Overall Use Support | Not Impairing |
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| Oil and grease | Aquatic Life Support | Not Impairing |
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| Other habitat alterations | Overall Use Support | Not Impairing |
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| Other habitat alterations | Aquatic Life Support | Not Impairing |
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