Arbor Lake IA 03-NSK-864
Poweshiek County S20T80NR16W W edge of Grinnell
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 03-NSK-00330-L_0
Overall Use Support
Not supporting
Aquatic Life Use Support
Threatened
Fish Consumption
Not supporting
Primary Contact Recreation
Not supporting
Documentation
Assessment Comments
Assessment is based on results of water quality monitoring and surveys by IDNR Fisheries Bureau.
Basis for Assessment
Used assessments of support of the Class A (primary contact) uses (=NS), the Class B(LW) aquatic life uses (=FST), and the fish consumption uses (=NS) developed for the 1994 report.
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) |
| 260 | Fish tissue analysis |
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 |
Causes and Sources of Impairment
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Algal Grwth/Chlorophyll a | Overall Use Support | Moderate |
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| Algal Grwth/Chlorophyll a | Primary Contact Recreation | Moderate |
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| Nutrients | Overall Use Support | Moderate |
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| Nutrients | Aquatic Life Support | Moderate |
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| Nutrients | Primary Contact Recreation | Moderate |
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| Siltation | Overall Use Support | Moderate |
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| Siltation | Aquatic Life Support | Moderate |
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