Rock Creek IA 01-WPS-366
mouth (S35 T81N R1E Clinton Co.) to bridge crossing at S2/11 T80N R1W Cedar Co.
Assessment Comments
Stream use assessment in Cedar County.
Basis for Assessment
Used a review of the field sheet from the September 1991 DNR stream use assessment in Cedar County to continue to assess support of the Class B(LR) aquatic life uses as FST due to (1) presence of a moderately diverse fish community (11 species from 2 families) for streams in the Southern Iowa Rolling Loess Prairies subecoregion (47f), (2) presnce of a majority of the expected fish taxa (5 of 9) for streams in this subregion, and (3) indications on field sheet of above average habitat quality due to presence of very diverse substrates, numerous pool/riffle sequences, lack of significant impacts to the physical characteristics of this stream, and fairly good low flow characteristics. Field sheet indicates that rocky substrates hindered effective seining. The data upon which this assessment is based are more than 5 years old. Additional monitoring is needed to update this assessment and to better determine the status of the aquatic communities and habitats present.
Assessment Key Dates
| 9/1/1991 | DNR Stream Use Assessment |
Methods
| 330 | Fish surveys |
| 375 | Visual observation-- may not quantify some parameters-- single season-- by prof. |
| 150 | Monitoring data more than 5 years old |
Monitoring Levels
| Biological | 0 |
| Habitat | 0 |
| Physical Chemistry | 0 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |