Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Deer Creek IA 02-CED-591

mouth (S23 T99N R18W Mitchell Co.) to the Mitchell-Worth county line (west line S6 T100N R18W Mitchell Co.)

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 02-CED-0540_1
Overall Use Support
Fully
Aquatic Life Use Support
Fully
Documentation
Assessment Comments

Assessment based on biocriteria data and stream use assessment.

Basis for Assessment

Used a review of the field sheet from the July 1992 DNR stream use asessment and the August 1995 DNR biocriteria sampling in Mitchell County to upgrade the assessment of support of the Class B(LR) uses to FS due to (1) presence of a moderately diverse to very diverse fish community (species/families, SUA->biocriteria:  10/3; 27/5) for streams in the Iowan Surface subecoregion, (2) presence of a majority (7 of 11, SUA) to nearly all (10 of 11, biocriteria) of the expected fish taxa for streams in this subregion, (3) indications on the SUA field sheet of average to above average habitat quality, and (4) presence of several environmentally sensitive species (e.g., largescale stoneroller, Ozark minnow, rosyface shiner, northern hogsucker, smallmouth bass, and rainbow darter).

Monitoring and Methods
Assessment Key Dates
8/15/1995 Biological Monitoring
7/1/1992 DNR Stream Use Assessment
Methods
220 Non-fixed station physical/chemical monitoring (conventional pollutant only)
315 Regional reference site approach
320 Benthic macroinvertebrate surveys
330 Fish surveys
380 Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof
Monitoring Levels
Biological 4
Habitat 4
Physical Chemistry 1
Toxic 0
Pathogen Indicators 0
Other Health Indicators 0
Other Aquatic Life Indicators 0
# of Bio Sites 1
BioIntegrity Good
Causes and Sources of Impairment
Causes Use Support Cause Magnitude Sources Source Magnitude
Other habitat alterations Overall Use Support Not Impairing
  • Channelization
  • Hydromodification
  • Not Impairing
  • Not Impairing