Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Chequest Creek IA 04-LDM-1030

mouth (S27 T69N R10W Van Buren Co.) to confluence with North Chequest Cr. in S25 T70N R13W Davis Co.

Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-LDM-0070_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Documentation
Assessment Comments

Stream use assessment.

Basis for Assessment

Used results of the July 1991 DNR stream use assessments to assess support of the Class B(LR) aquatic life uses as FST due to (1) habitat scores at two of three locations (which cover 17 of the 20 miles of designated stream) (28 and 23) better than the overall medians score (22) for DNR stream use assessments and (2) indications on field sheets of diverse substrates, several to numerous pool/riffle sequences, few channel alterations, and relatively stable stream banks.  Fish scores (9) for all assessments was poorer than the 75th percentile score for stream assessments made with seines, but field sheets note that presence of rocky substrates and snags hindered seining.   Field sheets suggest that habitat quality deteriorates from downstream to upstream, with the poorest quality near the confluence with N.  Chequest Cr.   Threats to continued support of the aquatic life uses include channel alterations (straightening) and pasturing of riparian areas.

Monitoring and Methods
Assessment Key Dates
7/1/1991 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