Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Boyer River IA 06-BOY-1510

from confluence with Lime Cr. (SE 1/4 S22 T86N R37W Sac Co.) to confluence with unnamed tributary approximately 5 miles south of Early in S 1/2 S33 T88N R37W Sac Co.

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 06-BOY-0030_2
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment is based on results of an October 1995 DNR stream use assessment.

Basis for Assessment

Continued to use the assessment of support of the Class B(WW) aquatic life uses developed for the 1996 report (=FST).

Monitoring and Methods
Assessment Key Dates
10/1/1995 DNR Stream Use Assessment
Methods
330 Fish surveys
375 Visual observation-- may not quantify some parameters-- single season-- by prof.
Monitoring Levels
Biological 3
Habitat 3
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
Other habitat alterations Overall Use Support Not Impairing
  • Bank or Shoreline Modification/Destabilization
  • Pasture grazing - Riparian
  • Not Impairing
  • Not Impairing
Other habitat alterations Aquatic Life Support Not Impairing
  • Bank or Shoreline Modification/Destabilization
  • Pasture grazing - Riparian
  • Not Impairing
  • Not Impairing