Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Hickory Creek IA 01-YEL-442

from south line of S28 T96N R5W (Allamakee Co.) to confluence with unnamed tributary in S5 T95N R5W Clayton Co.

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Not Assessed
Integrated Report
Category 0
Legacy ADBCode
IA 01-YEL-0120_2
Overall Use Support
Not assessed
Aquatic Life Use Support
Not assessed
Documentation
Assessment Comments

Stream use assessment in 1992.

Basis for Assessment

Used a review of the field sheet from the June 1992 DNR stream use assessment in Clayton County to change the assessment of support of the Class B(LR) auqatic life uses from FST to "not assessed" to to lack of sufficient information on the aquatic communities of this stream to develop an assessment.   As noted in the assessment developed for the 1996 report (above), the presence of rocky substrates made seining difficult.   The relatively high habitat score (28) for this stream, with indiations of very diverse susbstrates, numerous pool/riffle sequences, and no alterations to the physical characteristics of the stream channel in the area assssed, suggests a very high quality Class B(LR) stream.  Additional monitoring is needed to determine the status of the aquatic communities of this stream to provide the information necessary to develop an accurate assessment of the the degree to which the Class B(LR) uses are supported.   A cooperative project in the Hickory Creek watershed is focused on the water quality problems of streambank erosion, manure containment, stream sedimentation due to upland erosion, and pesticide/nutrient management issues in order to improve water quality, especially in the coldwater reach of this stream.

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