Mariposa Lake IA 03-NSK-867
Jasper County S32T81NR18W 6 mi. NE of Newton.
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
Trophic
Hypereutrophic
Trend
Stable
Legacy ADBCode
IA 03-NSK-00350-L_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Primary Contact Recreation
Not assessed
Documentation
Assessment Comments
Assessment is based on results of water quality monitoring and surveys by IDNR Fisheries Bureau.
Basis for Assessment
Used assessment of support of the Class B (LW) aquatic life uses developed for the 1994 report (=PS). Class A (primary contact) uses remain not assessed.
Monitoring and Methods
Assessment Key Dates
Methods
| 340 | Primary producer surveys (phytoplankton/periphyton/macrophyton) |
| 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 | 2 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |
Causes and Sources of Impairment
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Algal Grwth/Chlorophyll a | Overall Use Support | Moderate |
|
|
| Algal Grwth/Chlorophyll a | Aquatic Life Support | Moderate |
|
|
| Algal Grwth/Chlorophyll a | Primary Contact Recreation | Moderate |
|
|
| Siltation | Overall Use Support | Moderate |
|
|
| Siltation | Aquatic Life Support | Moderate |
|
|
| Nutrients | Overall Use Support | Slight |
|
|
| Nutrients | Aquatic Life Support | Slight |
|
|
| Nutrients | Primary Contact Recreation | Slight |
|
|