Grannis Creek IA 01-VOL-322
mouth (S30 T93N R7W Fayette Co.) to west line of S36 T93N R8W Fayette Co.
Assessment Comments
Assessment is based on a 1999 summary of trout reproduction in Iowa streams prepared by the DNR Fisheries Bureau.
Basis for Assessment
SUMMARY: The Class B(CW) coldwater aquatic life uses were assessed as "fully supported / threatened" (minor impacts). Fish consumption uses remain "not assessed." EXPLANATION: Based on a summary of trout reproduction in Iowa streams prepared by the DNR Fisheries Bureau, the Class B(CW) uses were assessed as "fully supported / threatened." According to Moeller (1999), Grannis Creek is in the category of Iowa trout streams that have at least some documented natural reproduction but that are generally unable to maintain a viable trout population at this time. Fish consumption uses remain "not assessed" due to lack of recent fish tissue monitoring in this stream reach.s remain "not assessed" due to lack of fish tissue monitoring in this stream reach.
Assessment Key Dates
| 9/30/1999 | Fixed Monitoring End Date |
| 10/1/1997 | Fixed Monitoring Start Date |
Methods
| 330 | Fish surveys |
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 |