Iowa DNR
ADBNet

Water Quality Assessments

Impaired Waters List

Helmer Creek IA 01-WPS-1948

mouth (T85N R04W Sec30) to headwaters (T86N R04W Sec31 NE) Jones Co.

Assessment Cycle
2022
Release Status
Final
Data Collection Period
Overall IR Category
3 - Insufficient data exist to determine whether any designated uses are met.
Trend
Unknown
Created
1/3/2022 10:47:42 AM
Updated
1/14/2022 3:00:41 PM
Assessment conducted in accordance with Iowa's 2022 IR methodology
Use Support
Class A1
Not Assessed
Class BWW1
WINOFI
Biological: low fish IBI
Support Level
Water in Need of Further Investigation (WINOFI)
Impairment Code
3b-u - Use potentially biologically impaired based on uncalibrated IBI metrics.
Cause Magnitude
Moderate
Status
Continuing
Source
Unknown: Source Unknown
Source Confidence
Low
Cycle Added
2008
Impairment Rationale
Low Biotic Index
Data Source
Biological monitoring: Iowa DNR WQMA
Impairment Delistings
No delistings for this assessment cycle.
Documentation
Assessment Summary

The presumptive Class BWW1 use was assessed as “WINOFI” based on biological sampling data. All other designated uses were "not assessed."

Assessment Explanation

Data Sources:

Data Source

Data Source ID

Data Type

Data Age

Site ID

Site Name

Site Description

Iowa DNR

6

BIO

See Below

520

Helmer Creek

Prairieburg – REMAP #242


Presumptive Class A1 - No Data


Presumptive Class BWW1 - Biological Sampling:

Fish:

BioNet Site ID

Date

Drainage Area (mi2)

Ecoregion

Major Drainage/ Thermal

Riffle Stream?

FIBI score

FIBI Class

47c FIBI BIT

FIBI Pass/ Fail

520

8/31/05

4

47c

MS/WW

No

27

Fair

44

Fail


Overall:

Community

Assessment Type

Assessment Result

Support Level

IR Category

Reason

Fish

Evaluated

Fail (0/1)

WINOFI

3bu

Assessment was evaluated because the drainage area of the site was smaller than the calibrated range.

Monitoring and Methods
Assessment Key Dates
8/31/2005 Biological Monitoring
Methods
150 Monitoring data more than 5 years old
315 Regional reference site approach
330 Fish surveys