Ottumwa Lagoon IA 04-LDM-1014
Wapello County S25T72NR14W at Ottumwa.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-LDM-00215-L_0
Overall Use Support
Not supporting
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Primary Contact Recreation
Not supporting
Documentation
Assessment Comments
Basis for Assessment
Continue to use the assessments of support of the Class A primary contact recreation uses (=NS) and the Class B(LW) aquatic life uses (=PS) developed for the 1994 and 1996 reports. These assessments were reviewed by the DNR Fisheries Bureau. Based on this review, the water quality impact due to "aquatic plants" (305(b) code 2200) was changed to "excessive algal growth" (305(b) code 2210).
Monitoring and Methods
Assessment Key Dates
Methods
| 340 | Primary producer surveys (phytoplankton/periphyton/macrophyton) |
| 222 | Non-fixed-station monitoring (conventional during key seasons and flows) |
| 260 | Fish tissue analysis |
| 120 | Surveys of fish and game biologists/other professionals |
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 |
|---|---|---|---|---|
| Pesticides | Overall Use Support | High |
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| Pesticides | Fish Consumption | High |
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| Algal Grwth/Chlorophyll a | Aquatic Life Support | Moderate |
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| Algal Grwth/Chlorophyll a | Primary Contact Recreation | Moderate |
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| Nutrients | Aquatic Life Support | Moderate |
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| Nutrients | Primary Contact Recreation | Moderate |
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| Suspended solids | Aquatic Life Support | Slight |
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