Iowa DNR
ADBNet

Water Quality Assessments

Impaired Waters List

Maquoketa River IA 01-MAQ-14

from N. Fk. Maquoketa R. to confluence with Farm Cr. in S10 T85N R1W Jones Co.

Assessment Cycle
1994
Result Period
1990 - 1992
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 01-MAQ-0060_1
Overall Use Support
Partial
Aquatic Life Use Support
Threatened
Fish Consumption
Fully
Primary Contact Recreation
Partial
Documentation
Assessment Comments

290220 (21IOWA/DNR) at Maquoketa.

Basis for Assessment

No violations of WQC for Class B; thus assess as FST due to known threats from ag.  NPS.   Of the 6 samples analyzed for fecal coliforms, 4 were collected at approx.  average flows; 3 of these samples had levels of fecals > Class A WQC; due to lack of complete data, use BPJ to assess as PS.  Not sure of source of these rel.  high levels of fecals; thus, used traditional sources of agricultural NPS and municipal WWT.

Monitoring and Methods
Assessment Key Dates
Methods
200 PHYSICAL/CHEMICAL MONITORING
120 Surveys of fish and game biologists/other professionals
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
Causes and Sources of Impairment
Causes Use Support Cause Magnitude Sources Source Magnitude
Cause Unknown Overall Use Support Moderate
  • Major Municipal Point Source
  • Moderate