Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

North Fork Yellow River IA 01-YEL-448

mouth (S13 T96N R7W Winneshiek Co.) to confluence with unnamed tributary in S3 T96N R7W Winneshiek Co.

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Not Assessed
Integrated Report
Category 0
Legacy ADBCode
IA 01-YEL-0160_0
Overall Use Support
Not assessed
Aquatic Life Use Support
Not assessed
Documentation
Assessment Comments

Stream use assessment in Winneshiek County.

Basis for Assessment

Used a review of the field sheet from the June 1992 DNR stream use assessment in Winneshiek County to change the assessment of support of the Class B(LR) aquatic life uses from FST to "not assessed" due to lack of sufficient information on the aquatic communities of this stream to develop an accurate assessment of the degree of use support.  That is, depite presence of at least average quality of aquatic habitats, only 5 cyprinid species were captured.   The field sheet does not indicate reasons for this relatively low aquatic diversity.   Additional monitoring is needed to determine the status of the aquatic communities and habitats of this stream reach and to provide the information needed to develop an accurate assessment of support of the degree to which the Class B(LR) aquatic life uses are supported.

Monitoring and Methods
Assessment Key Dates
6/1/1992 DNR Stream Use Assessment
Methods
330 Fish surveys
375 Visual observation-- may not quantify some parameters-- single season-- by prof.
150 Monitoring data more than 5 years old
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