Soap Creek IA 04-LDM-1032
mouth (S35 T71N R12W Wapello Co.) to confluence with Little Soap Cr. in S1 T70N R13W Davis Co.
Assessment Comments
1994 SUA: habscr/fshscr: 25/12 (shock; 24 species). 1996 biocriteria: FISH IBI=42 (FAIR) 22 spp., 6 fams.; BM-IBI=56 (GOOD)
Basis for Assessment
SUMMARY: The Class B(WW) aquatic life uses remain assessed as "fully 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 and 2000 reports (see above) that was based on results of the 1996 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
| 10/8/1996 | 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 |
| 150 | Monitoring data more than 5 years old |
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 | Good |