Knapp Creek IA 02-IOW-697
mouth (S34 T81N R8W Johnson Co.) to confluence with unnamed tributary in S16 T81N R8W Johnson Co.
Assessment Comments
Stream use assessment in Johnson County.
Basis for Assessment
Continued to use the assessment of support of the Class B(LR) aquatic life uses developed for the 1994 report (=PS). Review of the field sheet from the May 1992 DNR stream use assessment shows that only three fish species from one family were captured, with a fourth species (carp) observed, in 250 feet of seining. Several species/genera typcial of Class B(LR) streams in this region were not captured. Follow-up monitoring is needed to determine the status of aquatic communities and habitats and to determine the degree to which the Class B(LR) uses may be impaired. [Note: Knapp Creek was sampled at this location in July 1981 as part of the Iowa State University statewide fish survey (JRO-87-1981). Six species of fish (all cyprnids) were captured with seines; 4 of the 8 expected fish taxa for this subregion (47f) were present.]
Assessment Key Dates
| 5/1/1992 | DNR Stream Use Assessment |
Methods
| 375 | Visual observation-- may not quantify some parameters-- single season-- by prof. |
| 330 | Fish surveys |
| 150 | Monitoring data more than 5 years old |
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 |