Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Little Cedar River IA 02-CED-575

from Chickasaw/Floyd county line ( W line S6 T95N R14W Chickasaw Co.) to confluence with unnamed tributary in W 1/2 S22 T96N R15W Floyd Co. (approximately 4 miles NE of Charles City)

Assessment Cycle
2004
Result Period
2000 - 2002
Designations
Assessment Methodology
Assessment Type
Evaluated
Integrated Report
Category 2a
Legacy ADBCode
IA 02-CED-0470_2
Overall Use Support
Fully
Aquatic Life Use Support
Fully
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment is based on results of (1) IDNR stream use assessment in August 1995 and (2) IDNR/UHL biocriteria monitoring in October 1995.

Basis for Assessment

SUMMARY:  The Class B(WW) aquatic life uses remain assessed (evaluated) as "fully supported" based on results of (1) an IDNR stream use assessment in August 1995 and (2) an IDNR/UHL biocriteria sampling in October 1995.   Fish consumption uses remain "not assessed" due to the lack of recent fish contaminant monitoring in this stream reach.  

EXPLANATION:  Continue to use the assessment developed for the 1998, 2000, and 2002 reports that was based primarily on results of the October 1995 IDNR/UHL biocriteria assessment (Fish IBI= 85(excellent), BM-IBI= 79(very good)) and, secondarily, on the August 1995 IDNR stream use assessment.   However, because these data are now considered too old (greater than five years) to accurately characterize current water quality conditions, the assessment category is changed from "monitored" (indicating an assessment with relatively high confidence) to "evaluated" (indicating an assessment with relatively low confidence).   Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this stream segment.

Monitoring and Methods
Assessment Key Dates
10/3/1995 Biological Monitoring
8/1/1995 Biological Monitoring
Methods
320 Benthic macroinvertebrate surveys
330 Fish surveys
380 Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof
220 Non-fixed station physical/chemical monitoring (conventional pollutant only)
315 Regional reference site approach
150 Monitoring data more than 5 years old
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 Very Good