North Skunk River IA 03-NSK-853
mouth (S5 T74N R10W Keokuk Co.) to confluence with Cedar Cr. in S15 T75N R12W Keokuk Co.
Assessment Comments
Stream use assessment in Keokuk County.
Basis for Assessment
Used results of the November 1994 DNR stream use assessment to assess support of the Class B(WW) uses as FST due to (1) habitat score (27) much better than the overall median score (22) for DNR stream use assessments, (2) fish score (11) better than 75th percentile score for stream assessments made with seines, (3) indications on field sheet of diverse substrates and only isolated channel alterations, and (4) notes on field sheet indicating "numerous snags, pools, and a few rocky riffles," and "many areas too deep and wide to effectively sample. Relatively low number of fish species sampled likely due to inappropriate sampling gear for such a large stream. Continue support of uses threatened by sediment delivered to stream through stream bank erosion and through erosion of soil from agricultural areas in the watershed.
Assessment Key Dates
| 11/1/1994 | 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 |