Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Shimon Marsh IA 04-RAC-1779

Pocahontas County S9T90NR34W 3 mi SE of Varina.

Assessment Cycle
2014
Result Period
2010 - 2012
Designations
Class B(LW) Class HH
Assessment Methodology
Assessment Type
Evaluated
Integrated Report
Category 2a
Legacy ADBCode
IA 04-RAC-01615-L_0
Overall Use Support
Fully
Aquatic Life Use Support
Fully
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment remains based on information from the IDNR Wildlife Bureau.

Basis for Assessment

[NOTES:  Prior to the 2002 cycle, the Waterbody ID number for this wetland was IA-WETLAND-48.   This wetland is not in the March 2006 version of the Iowa Water Quality Standards but is proposed for inclusion to the standards as a Class B(LW) waterbody.]

SUMMARY/EXPLANATION:  The aquatic life uses remain assessed (evaluated) as "fully supported” based on information from the IDNR Wildlife Bureau.   The fish consumption uses remain "not assessed" due to the lack of water quality information upon which to base an assessment.   In general, Iowa wetlands are not managed for recreational fisheries; thus, fish contaminant monitoring is not typically conducted at these waterbodies.   This assessment is the same as that developed for the previous assessment/listing cycle (not impaired) and does not reflect any known change in water quality.

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 Aquatic Life Support Not Impairing
  • Agriculture
  • Bank or Shoreline Modification/Destabilization
  • Natural Sources
  • Not Impairing
  • Not Impairing
  • Not Impairing
Exotic species Aquatic Life Support Not Impairing
  • Source Unknown
  • Not Impairing