Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Densmore Lake IA 01-NEM-74

Alternate name(s) for this segment: Green Island WMA

Jackson County S20T85NR6E near Green Island.

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Evaluated
Integrated Report
Category 0
Legacy ADBCode
IA 01-NEM-00230-L_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment based on surveys by IDNR Fisheries Bureau.

Basis for Assessment

The assessment developed for the 1994 report was reviewed and approved by the DNR Wildlife Bureau.  Thus, the Class B(LW) aquatic life uses were asssessed as PS due to siltation impacts from agricultural nonpoint sources.

Monitoring and Methods
Assessment Key Dates
Methods
120 Surveys of fish and game biologists/other professionals
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
Siltation Overall Use Support Moderate
  • Agriculture
  • Crop-related Sources
  • Natural Sources
  • Moderate
  • Moderate
  • Slight
Siltation Aquatic Life Support Moderate
  • Agriculture
  • Crop-related Sources
  • Natural Sources
  • Moderate
  • Moderate
  • Slight