Silver Creek IA 06-LSR-1594
mouth (S13 T88N R39W Ida Co.) to confluence with South Silver Cr. in S9 T88N R39W Ida Co.
Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) monitoring in 1997: FIBI = 41 (fair), BMIBI = 70 (good). FIBI BIC = 43, BMIBI BIC = 54.
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses are assessed (evaluated) as "fully supported" based on results of IDNR/UHL biological (biocriteria) sampling in 1997. These data are now to old for the assessment to be considered monitored; therefore, the assessment is considered evaluated.
EXPLANATION: The aquatic life uses are assessed (evaluted) as "fully supported" based on results of the IDNR/UHL biocriteria monitoring conducted on this stream segment in 1997. The FIBI score was 41 (fair); the BMIBI score was 70 (good). The aquatic life use support was assessed (evaluated) as fully supported (=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 FIBI BIC for this ecoregion is 43 and the BMIBI BIC for this ecoregion is 54.
Assessment Key Dates
| 8/9/1997 | Biological Monitoring |
| 8/9/1997 | One-time Chemical 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 | 0 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 1 |
| BioIntegrity | Good |