Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Lake Meyer IA 01-TRK-158

Winneshiek County S34T97NR9W 3 mi SW of Calmar.

Assessment Cycle
2000
Result Period
1996 - 1998
Designations
Assessment Methodology
Assessment Type
Monitored
Integrated Report
Category 0
Trophic
Eutrophic
Trend
Stable
Legacy ADBCode
IA 01-TRK-02245-L_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Fully
Primary Contact Recreation
Not assessed
Documentation
Assessment Comments

Assessment is based on (1) surveys by DNR Fisheries and (2) results of fish tissue (RAFT) monitoring in 1994. See attached document for details.

Basis for Assessment

SUMMARY:  The Class A (primary contact recreation) uses remained "not assessed."  Continue to assess support of the Class B(LW) aquatic life uses as "partially supported."  Fish consumption uses remained assessed as fully supported.   EXPLANATION:  The Class A uses were considered "not assessed" due to a lack of information on levels of indicator bacteria for this lake.   The Class B(LW) uses remained assessed as "partially supported" based on the assessments developed for previous reports (see above).   This assessment was reviewed and approved by the DNR Fisheries Bureau in 2000.   In response to water quality problems at this lake, the Winneshiek County Soil and Water Conservation District conducted an assessment of the Lake Meyer watershed to identify priority areas for control of soil erosion.   Several priority areas have been identified and landowners have been contacted.   Additional funding sources are needed to implement the controls on soil erosion to improve the water quality in this lake.   Fish consumption uses at this lake remain assessed as "fully supported" based on results of EPA/DNR fish tissue (RAFT) monitoring in 1994 (see assessment for the 1998 report above).   This lake is scheduled to be sampled as part of the ISU/DNR lake water quality monitoring project.

Monitoring and Methods
Assessment Key Dates
Methods
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
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Algal Grwth/Chlorophyll a Primary Contact Recreation Moderate
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Noxious aquatic plants Overall Use Support Moderate
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Noxious aquatic plants Primary Contact Recreation Moderate
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Nutrients Overall Use Support Moderate
  • Agriculture
  • Internal nutrient cycling (primarily lakes)
  • Natural Sources
  • Moderate
  • Moderate
  • Slight
Nutrients Aquatic Life Support Moderate
  • Agriculture
  • Internal nutrient cycling (primarily lakes)
  • Natural Sources
  • Moderate
  • Moderate
  • Slight
Nutrients Primary Contact Recreation Moderate
  • Agriculture
  • Internal nutrient cycling (primarily lakes)
  • Natural Sources
  • Moderate
  • Moderate
  • Slight
Organic enrichment/Low DO Overall Use Support Moderate
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Organic enrichment/Low DO Aquatic Life Support Moderate
  • Internal nutrient cycling (primarily lakes)
  • Moderate
Siltation Overall Use Support Moderate
  • Agriculture
  • Natural Sources
  • Moderate
  • Slight
Siltation Aquatic Life Support Moderate
  • Agriculture
  • Natural Sources
  • Moderate
  • Slight