Big Creek Lake IA 04-UDM-1242
Polk County S22T81NR25W near Polk City
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-UDM-0140-L_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Fish Consumption
Fully
Primary Contact Recreation
Threatened
Documentation
Assessment Comments
Basis for Assessment
Used assessments of support of the Class A (primary contact recreation) and Class B(WW) aquatic life uses developed for the 1994 report. Results of 1994 RAFT fish tissue monitoring show levels of all contaminants below 1/2 of FDA action levels (=FS). USDA has selected the watershed of Big Creek Lake as a potential site for a national swine research center; DNR believes that operation of the center would threaten the continued support of the designated uses of the lake. Existing ISU hog farm in the watershed of this lake is also believed to threaten water quality of the lake.
Monitoring and Methods
Assessment Key Dates
Methods
| 340 | Primary producer surveys (phytoplankton/periphyton/macrophyton) |
| 420 | Water column surveys (e.g. fecal coliform) |
| 120 | Surveys of fish and game biologists/other professionals |
| 222 | Non-fixed-station monitoring (conventional during key seasons and flows) |
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 |