Little Maple River IA 06-LSR-1596
mouth (SW 1/4 S34 T90N R39W Ida Co.) to confluence with unnamed tributary in NE 1/4 S20 T90N R38W Buena Vista Co.
Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) monitoring in 1997: FIBI = 37 (fair), BMIBI = 69 (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 too old for the assessment to be considered monitored; therefore, this assessment is considered evaluated.
EXPLANATION: The aquatic life uses are assessed as "fully supported" based on results of the IDNR/UHL biocriteria monitoring conducted on this stream segment in 1997. The FIBI score was 37 (fair), and the BMIBI score was 69 (good). The aquatic life use support was assessed 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. This site passes the FIBI BIC with the aid of the UAV of 7 points.
Assessment Key Dates
| 8/20/1997 | Biological Monitoring |
| 8/20/1997 | 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 | 1 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 1 |
| BioIntegrity | Fair |