Fox River IA 04-FOX-994
from the Iowa/Missouri state line to confluence with an unnamed tributary in NW 1/4 S6 T68N R12W Davis Co.
Assessment Comments
Stream use assessment.
Basis for Assessment
Used results of four November 1990 DNR stream use assessments to assess support of the Class B(LR) aquatic life uses as PS due to (1) habitat scores (21, 22, 20, and 25) general equal to or worse than the overall median score (22) for DNR stream use assessments, (2) indications on most field sheets of few or no pool/riffle sequences, extensive channel alterations (straightening), and unstable (erosive) stream banks, (3) fish scores (11, 11, 12) equal to or worse than the 75th percentile score (12) for stream assessments made with electrofishers, and (4) fish communities with rel. low number of species. Assessment made at upstream boundary of the Class B(LR) reach shows considerably better habitat quality than in downstream reaches due to lessening of channelization impacts.
Assessment Key Dates
| 11/1/1990 | DNR Stream Use Assessment |
Methods
| 330 | Fish surveys |
| 375 | Visual observation-- may not quantify some parameters-- single season-- 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 | 0 |
| BioIntegrity | N/A |