Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Sweet Marsh Segment B IA 01-WPS-415

Alternate name(s) for this segment: Martens Lake

Bremer County S35T93NR12W 1.5 mi. NE of Tripoli.

Assessment Cycle
1994
Result Period
1990 - 1992
Designations
Assessment Type
Evaluated
Integrated Report
Category 0
Legacy ADBCode
IA 01-WPS-01907-L_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assement based on reports by IDNR Wildlife Bureau.

Basis for Assessment

Support of the Class B(LW) aquatic life uses was assessed as PS due to impacts from siltation 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
  • 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