Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Calhoun Creek IA 04-LDM-1068

mo->Union Valley Cr S33T78NR20W Jasper

Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-LDM-0225_0
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Documentation
Assessment Comments

Stream use assessments.

Basis for Assessment

Used results of the November 1990 DNR stream use assessment to assess support of the Class B(LR) aquatic life uses as PS due to (1) habitat score (16) much worse than the overall median habitat score (22) for DNR stream use assessments, (2) indications on field sheet of few pools and/or riffles, frequent channel alterations, and no substrate diversity (mud), and (3) very poor diversity of fish species (2 species) (although better diversity (9 species) upstream in general use reach).   Both channel straightening and pasturing were identified on the field sheet as channel alterations.

Monitoring and Methods
Assessment Key Dates
11/1/1990 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