Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Otter Creek Marsh IA 02-IOW-717

Tama County S3T82NR14W 6 mi ESE of Tama.

Assessment Cycle
2000
Result Period
1996 - 1998
Designations
Assessment Methodology
Assessment Type
Evaluated
Integrated Report
Category 0
Trend
Stable
Legacy ADBCode
IA 02-IOW-02015-L_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment is based on surveys of the DNR Wildlife Bureau.

Basis for Assessment

SUMMARY:  The Class B(LW) aquatic life uses remained assessed as "partially supported."  EXPLANATION:  The Class B(LW) aquatic life uses remain assessed as "partially supported" based on review and approval of the previous (1998) assessment by the DNR Wildlife Bureau in 2000.   The water quality trend for this wetland area was identified as "stable."  According to the DNR Wildlife Bureau, siltation related to heavy rain and flood events remains a problem for this wetland area.

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
  • Bank or Shoreline Modification/Destabilization
  • Natural Sources
  • Nonirrigated Crop Production
  • Slight
  • Slight
  • Moderate
Siltation Aquatic Life Support Moderate
  • Bank or Shoreline Modification/Destabilization
  • Natural Sources
  • Nonirrigated Crop Production
  • Slight
  • Slight
  • Moderate