Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Corydon Reservoir IA 05-CHA-1331

Wayne County S24T69NR22W at Corydon.

Assessment Cycle
1994
Result Period
1990 - 1992
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 05-CHA-00620-L_0
Overall Use Support
Not supporting
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Primary Contact Recreation
Not supporting
Drinking Water
Not supporting
Documentation
Assessment Comments

Basis for Assessment

DW uses were assessed as NS, fishable uses were assessed as PS, and swimmable uses were not assessed for the following reasons: (1) levels of atrazine exceeded MCL from June through Sept 1991 and the yearly average approx = 7 ug/l (=NS); (2) avg levels of secchi depth, total-P, and TSS during the May-Aug period were worse than overall averages for SPO impoundments sampled during 1990 and 92; averages for secchi depth and TSS were in the worst 10% of the SPO impoundments; (3) although designated for swim.  uses, lake does not have a swimming beach; thus presume level of swimming use is zero.   In Feb 93, atrazine, cyanazine, & metolachlor at low levels (Miller and Kennedy 1993).

Monitoring and Methods
Assessment Key Dates
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