Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Howerdon Creek IA 04-LDM-1110

mouth (S17 T76N R28W Madison Co.) to confluence with unnamed tributary in SW 1/4 S25 T76N R29W Madison Co.

Assessment Cycle
1994
Result Period
1990 - 1992
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-LDM-0318_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Documentation
Assessment Comments

Stream use assessment.

Basis for Assessment

Stream assess.  form indicates above avg.  habitat quality.  Some diversity of substr.  and several pool/riffle sequences a result of stream downcutting into bedrock.   Good depth in pools noted.   Timber riparian vegetation provides shade to stream.  Rel.  good diversity of fish species observed, including first record of s.m.  bass in Madison County.

Monitoring and Methods
Assessment Key Dates
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