Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Mill Creek IA 06-LSR-1617

from confluence with Whiskey Cr. (east line S29 T94N R41W O'Brien Co.) to confluence with West Branch Mill Cr. in S4 T95N R41W O'Brien Co.

Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 06-LSR-0180_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Documentation
Assessment Comments

Assessment is based on results of an October 1994 IDNR stream use assessment conducted in O'Brien County.

Basis for Assessment

Used results of the October 1994 DNR stream use assessment to assess support of the Class B(LR) aquatic life uses as FST due to (1) fish score (14) much better than the 75th percentile score (10) for DNR stream use assessments made with seines, (2) habitat score (21) is below the overall median score for DNR stream use assessments (22), but strength of fish score does not suggest an impairment.   Continued support of aquatic life uses threatened by extensive channelization.

Monitoring and Methods
Assessment Key Dates
10/1/1994 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