Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Badger Creek IA 04-UDM-1289

mouth (S30T90N R28W Webster Co.) to Badger Lake Dam in S19 T90N R28W Webster Co.

Cycle
2018
Release Status
Final
Overall IR
3 - Insufficient data exist to determine whether any designated uses are met.
Trend
Unknown
Created
8/1/2019 7:31:36 AM
Updated
8/1/2019 7:32:09 AM
Use Support
Class A1
Recreation - Primary contact
Not Assessed
Class BWW2
Aquatic Life - Warm Water Type 2
WINOFI
Impairment Code
3b - Use potentially impaired based on an evaluated assessment.
Cause Magnitude
Moderate
Status
Continuing
Source
Unknown: Source Unknown
Source Confidence
N/A
Cycle Added
1996
Impairment Rationale
Potential Impairment
Data Source
Special project/study: Iowa DNR
General Use
General Use water -
Not Assessed
Impairment Delistings
No delistings for this assessment cycle.
Documentation
Assessment Summary

The presumptive Class A1 (primary contact recreation) uses remain "not assessed" due to the lack of information upon which to base an assessment.  The Class B(WW2) aquatic life uses remain assessed as "partially supported" based on results of biological monitoring and habitat assessment conducted as part of the November 1994 DNR stream use assessment. 

Assessment Explanation

Continue to use the assessment developed for the 1998 and 2000 reporting cycles that was based on results of the 1994 DNR stream use assessment. As stated in the assessment developed for the 1998 reporting cycle, the aquatic lifeuses were assessed as "partially supported" due to (1) relatively low fish community diversity (5 species from 3 families) for streams in the Des Moines Lobe subecoregion and (2) presence of only 3 of the 11 expected fish taxa for streams in this subregion. The relatively poor results for sampling of the aquatic community is likely due to the abundance of rocky substrates and snags in this stream. Nonetheless, the low diversity and lack of environmentally sensitive species suggests that follow-up monitoring is needed to better determine the status of the aquatic communities and to determine the degree to which the aquatic life uses may be impaired. Field sheet indicates no significant impacts to the physical characteristics of this stream.

Although the data upon which this assessment were originally based have aged well beyond 10 years--and are thus considered too old to characterize current water quality conditions--the indication of a potential impairment suggests that this stream segment should remain assessed (evaluated) as "partially supported" and thus remain in Category 3b of Iowa’s Integrated Reports (i.e., on Iowa's list of waters in need of further investigation). Excerpts from the assessment developed for the 2004 assessment/listing cycle are included below.

Monitoring and Methods
Assessment Key Dates
11/10/1994
DNR Stream Use Assessment
Methods
150
Monitoring data more than 5 years old
330
Fish surveys
375
Qualitative physical habitat assessment