Maquoketa River IA 01-MAQ-16

from Plum Cr. (S11 T87N R4W Delaware Co.) to Quaker Mill Dam in S19 T89N R5W Delaware Co.

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: 8/13/2020 9:37:49 AM
Updated: 10/13/2020 10:56:08 AM

Use Support

Class A1

Recreation - Primary contact

Partially Supported

Bacteria: Indicator Bacteria- E. coli

Support Level

Partially Supported

Impairment Code

5a - Pollutant-caused impairment. TMDL needed.

Cause Magnitude

Slight

Status

Continuing

Source

Unknown: Source Unknown

Source Confidence

N/A

Cycle Added

2008

Impairment Rationale

Geometric mean criterion exceeded

Data Source

TMDL monitoring: Iowa DNR

TMDL Priority

Tier IV

Class BWW1

Aquatic Life - Warm Water Type 1

Partially Supported

Biological: low aquatic macroinvertebrate IBI

Support Level

Partially Supported

Impairment Code

5b-t - Biological - tentative

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

Class HH

Human Health -

Fully Supported

General Use

General Use water -

Not Assessed

Impairment Delistings

No delistings for this assessment cycle.

Documentation

Assessment Summary

The Class A1 use remains assessed as “partially supported” due to levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The Class BWW1 use remains assessed as “partially supported” based on biological sampling data. The Class HH use remains assessed as “fully supported” based on fish tissue sampling data.

Assessment Explanation

Sources of Data:

Data Source	Data Source ID	Data Type	Data Age	Site ID	Site Name	Site Description
Iowa DNR	6	WQ	CY 2012-2013	15280023	Maquoketa River	at Honey Creek Bridge
Iowa DNR	6	WQ	CY 2012-2013	16280001	Maquoketa River	near Schram Park in Manchester
Iowa DNR	6	WQ	CY 2012-2013	15280004	Maquoketa River	above Lake Delhi
Iowa DNR	6	BIO	See Below	323	Maquoketa River	Manchester – REMAP #28
Iowa DNR	6	BIO	See Below	977	Maquoketa River	Below Delhi Dam - MQ002
Iowa DNR	6	BIO	See Below	1017	Maquoketa River	Lyle Retz Park - MQ003
Iowa DNR	6	BIO	See Below	1016	Maquoketa River	S of Manchester - MQ007
Iowa DNR	6	BIO	See Below	1015	Maquoketa River	Fareway Dam Manchester - US - MQ009
Iowa DNR	6	FT	See Below	279	Maquoketa River	downriver of former site of Lake Delhi Dam

Class A1 - pH:

Site ID	Data Source ID	# Samples / # Years	Maximum Value	Mean Value	Median Value	# Violations	% Violations	Significantly >10% Violations	Assessment Type	Support Level
15280023	6	7/1	8.3	8.1	8.1	0	0%	No	Evaluated	Full
16280001	6	8 / 2	8.2	8.2	8.3	0	0%	No	Evaluated	Full
15280004	6	7/1	8.3	8.2	8.2	0	0%	No	Evaluated	Full

Class BWW1 - Conventional Parameters:

Site ID	Data Source ID	Parameter Name	# Samples / # Years	Maximum Value	Mean Value	Median Value	# Acute / Chronic Violations	% Acute/ Chronic Violations	Significantly >10% Violations	Assessment Type	Support Level
15280023	6	Dissolved Oxygen	7/1	10.8	9.1	9.2	NA / 0	NA / 0%	No	Evaluated	Full
15280023	6	pH	7/1	8.3	8.1	8.1	0 / NA	0% / NA	No	Evaluated	Full
15280023	6	Temperature	7/1	17.1	11.8	13.5	0 / 0	0% / 0%	No	Evaluated	Full
16280001	6	Dissolved Oxygen	8 / 2	9.8	7.6	7.7	NA / 0	NA / 0%	No	Evaluated	Full
16280001	6	pH	8 / 2	8.2	8.2	8.3	0 / NA	0% / NA	No	Evaluated	Full
16280001	6	Temperature	8 / 2	18.3	12.2	12.7	0 / 0	0% / 0%	No	Evaluated	Full
15280004	6	Dissolved Oxygen	7/1	13.5	9.2	9.7	NA / 0	NA / 0%	No	Evaluated	Full
15280004	6	pH	7/1	8.3	8.2	8.2	0 / NA	0% / NA	No	Evaluated	Full
15280004	6	Temperature	7/1	17.4	12.4	14.1	0 / 0	0% / 0%	No	Evaluated	Full

Class BWW1 - Biological Sampling:

Benthic Macroinvertebrates:

BioNet Site ID	Date	Drainage Area (mi2)	Ecoregion	Major Drainage	BM Sample Gear	BMIBI score	BMIBI Class	47c BMIBI BIT	BMIBI Pass/ Fail
323	9/25/13	274.4	47c	MS	ArtSub	48	Fair	52	Fail
323	9/24/12	274.4	47c	MS	ArtSub	57	Good	52	Pass
323	9/4/02	274.4	47c	MS	Hess	57	Good	70	Fail

Fish:

BioNet Site ID	Date	Drainage Area (mi2)	Ecoregion	Major Drainage	Riffle Stream?	FIBI score	FIBI Class	47c FIBI BIT	FIBI Pass/ Fail
1017	7/13/18	305	47c	MS	Und	53	Good	44	Pass
977	7/12/18	213	47c	MS	Und	35	Fair	44	Fail
1017	8/10/17	305	47c	MS	Und	78	Excellent	44	Pass
977	7/19/17	213	47c	MS	Und	37	Fair	44	Fail
1016	8/9/16	351	47c	MS	Und	57	Good	44	Pass
1015	8/8/16	347	47c	MS	Und	54	Good	44	Pass
1017	7/15/16	305	47c	MS	Und	53	Good	44	Pass
1017	7/23/15	305	47c	MS	Und	55	Good	44	Pass
977	7/17/15	213	47c	MS	Und	36	Fair	44	Fail
1016	9/16/14	351	47c	MS	Und	73	Excellent	44	Pass
1015	9/15/14	347	47c	MS	Und	68	Good	44	Pass
977	7/28/14	213	47c	MS	Und	38	Fair	44	Fail
1017	7/24/14	305	47c	MS	Und	64	Good	44	Pass

Overall:

Community	Assessment Type	Assessment Result	Support Level	Earned IR Category	Actual IR Category	Reason
Benthic Macroinvertebrates	Evaluated	Fail (1/3)	Partial
Fish	Monitored	Pass (9/13)	Full
Overall	Evaluated	Fail	Partial	3bc	5bt	Assessment is evaluated because the BWW1 impairment is based on BMIBI samples that were not collected in the last five years.

Class HH – Fish Tissue Sampling:

Site ID	Date	Species Name	Biopart	# in sample	Hg result	Hg violation?	Assessment Type	Support Level
279	8/14/2012	smallmouth bass	plug	5	0.183	No	Evaluated	Full

Monitoring and Methods

Assessment Key Dates

5/7/2012

Fixed Monitoring Start Date

11/18/2013

Fixed Monitoring End Date

8/14/2012

Fish Tissue Monitoring

9/24/2012

Biological Monitoring

9/25/2013

Biological Monitoring

8/9/2016

Biological Monitoring

8/8/2016

Biological Monitoring

7/15/2016

Biological Monitoring

7/23/2015

Biological Monitoring

7/24/2014

Biological Monitoring

7/28/2014

Biological Monitoring

9/15/2014

Biological Monitoring

9/16/2014

Biological Monitoring

7/17/2015

Biological Monitoring

9/4/2002

Biological Monitoring

7/19/2017

Biological Monitoring

8/10/2017

Biological Monitoring

7/12/2018

Biological Monitoring

7/13/2018

Biological Monitoring

Methods

150

Monitoring data more than 5 years old

240

Non-fixed station physical/chemical (conventional + toxicants)

260

Fish tissue analysis

315

Regional reference site approach

320

Benthic macroinvertebrate surveys

330

Fish surveys

420

Indicator bacteria monitoring