Bailey Creek IA 02-WFC-820

Lincoln Street at Sheffield (T93N R20W Sec9 Franklin County) to confluence with unnamed tributary (T94N R22W Sec16 Cerro Gordo County)

Open Data Collection Period Modal

For purposes of developing stream/river water quality assessments for integrated reporting, three years of water quality data are typically used for both conventional pollutant parameters (e.g., indicator bacteria) and the less frequently monitored toxic parameters (e.g., toxic metals). Since the 2004 IR cycle, DNR has used a three-year data gathering period for streams, rivers, and beaches. For most assessments, the use of three years of data increases the number of samples upon which the decision on use support is based and helps address the problem of weather-related year-to-year fluctuations in water quality.

Due to the lower sampling frequency in Iowa’s ambient lake, biological, fish kill, and fish tissue monitoring programs, five years of data are used for developing IR assessments and for identifying Section 303(d) listings.

Data Type	Data Timeframe
Beach Sampling Data	CY 2016 - 2018
Stream/River Water Quality Data	CY 2016 - 2018
Lake Water Quality Data	CY 2014 - 2018
Biological Sampling Data	CY 2014 - 2018*
Fish Kill Data	CY 2014 - 2018
Fish Tissue Sampling Data	CY 2014 - 2018
Continuous Dissolved Oxygen Sampling Data	CY 2014 - 2018
*Biological sites sampled in both 2013 and 2017 were also assessed.

Open Segment Map
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Cycle: 2020
Release Status: Final
Overall IR: 5 - Water is impaired or threatened and a TMDL is needed.
Trend: Unknown
Created: 6/17/2020 9:43:02 AM
Updated: 10/12/2020 1:30:58 PM

Use Support

Class A1

Presumptive Use

Recreation - Primary contact

Not Assessed

Class BWW2

Aquatic Life - Warm Water Type 2

Partially Supported

Biological: low fish & invert IBIs- cause unknown

Support Level

Partially Supported

Impairment Code

5b-v - Biological - verified

Cause Magnitude

Slight

Status

Continuing

Source

Unknown: Source Unknown

Source Confidence

Low

Cycle Added

2006

Impairment Rationale

Low Biotic Index

Data Source

Biological monitoring: Iowa DNR WQMA

TMDL Priority

Tier IV

General Use

General Use water -

Not Assessed

Impairment Delistings

Cycle Added	Class	Cause	Data Source	Rationale
2010	Class BWW2	Fish Kill: Caused By Pesticides	Biological monitoring: Iowa DNR fish kill follow-up	New data: recovery of fish community from pollutant-caused fish kill

Documentation

Assessment Summary

The Class BWW2 use was assessed as “partially supported” based on biological sampling data. All other designated uses were "not assessed".

Assessment Explanation

Sources of Data:

Data Source	Data Source ID	Data Type	Data Age	Site ID	Site Name	Site Description
Iowa DNR	6	BIO	See Below	52	Bailey Creek	Ingrebretsen Co. Park - Sheffield

Presumptive Class A1 - No Data

Class BWW2 - Biological Sampling:

Benthic Macroinvertebrates:

BioNet Site ID	Date	Drainage Area (mi2)	Ecoregion	Major Drainage/Thermal	BM Sample Gear	BMIBI score	BMIBI Class	47c BMIBI BIT	BMIBI Pass/ Fail
52	7/25/17	77	47c	MS/WW	Hess	69	Good	70	Fail
52	9/13/13	77	47c	MS/WW	Surb	54	Fair	70	Fail

Fish:

BioNet Site ID	Date	Drainage Area (mi2)	Ecoregion	Major Drainage/Thermal	Riffle Stream?	FIBI score	FIBI Class	47c FIBI BIT	FIBI Pass/ Fail
52	7/25/17	77	47c	MS/WW	Yes	71	Excellent	65	Pass
52	9/13/13	77	47c	MS/WW	Yes	61	Good	65	Fail

Overall:

Community	Assessment Type	Assessment Result	Support Level	Earned IR Category	Actual IR Category	Reason
Benthic Macroinvertebrates	Evaluated	Fail (0/2)	Partial
Fish	Evaluated	Fail (1/2)	Partial
Overall	Evaluated	Fail	Partial	3bc	5bv	Assessment is evaluated because it included samples not collected in the last five years.

Class BWW2 – Fishkill Assessment:

BioNet Site ID	Date	Drainage Area (mi2)	Ecoregion	Major Drainage/ Thermal	Fish per mile	REMAP 25 fish per mile	>REMAP 25 fish per mile?	2000 305b fish taxa present	Fish Taxa Present %
52	7/25/17	77	47c	MS/WW	5191	3927	Yes (Pass)	11/11	100% (Pass)
52	9/13/13	77	47c	MS/WW	4433	3927	Yes (Pass)	11/11	100% (Pass)
The Class BWW2 use previously resided in Category 5b based on 2009 and 2010 fish kills. This segment’s fish community was sampled in 2013 and 2017 as part of the DNR fish kill follow-up sampling program. The results from this follow-up sampling and comparison to ecoregion averages suggest that the fish community of this segment is similar to non-fish kill impacted streams. Based on the results of the fish kill follow-up sampling, the Category for the fish kill assessment was changed from 5b to 3a (water not assessed).

Monitoring and Methods

Assessment Key Dates

7/25/2017

Biological Monitoring

9/13/2013

Biological Monitoring

Methods

150

Monitoring data more than 5 years old

315

Regional reference site approach

320

Benthic macroinvertebrate surveys

330

Fish surveys