Iowa DNR
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Water Quality Assessments
Impaired Waters List

Lake Fisher IA 04-FOX-998

Davis County S19T69NR13W 2 miles NW of Bloomfield.

Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-FOX-00165-L_0
Overall Use Support
Threatened
Aquatic Life Use Support
Not assessed
Fish Consumption
Not assessed
Drinking Water
Threatened
Documentation
Assessment Comments

Assessment is based on results of a 1995 UHL survey of water supply reservoirs.

Basis for Assessment

Used results of sampling at two locations in January 1995 for 8 common agricultural herbicides and 2 atrazine metabolites as summarized by Miller and Kennedy (1995) to assess support of the Class C (drinking water) uses as FST due to (1) levels of the herbicides detected (atrazine and cyanazine) were below (approx 1/2) the MCL for atrazine, (2) levels of atrazine (0.82 to 1.1 ug/l inlet/dam) and cyanazine (0.87 to 2.3 ug/l inlet/dam) were generally similar to the average reportable concentration for the 19 lakes sampled.

Monitoring and Methods
Assessment Key Dates
1/1/1995 Biological Monitoring
Methods
240 Non-fixed station physical/chemical (conventional + toxicants)
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