Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Maquoketa River IA 01-MAQ-16

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

Cycle
2022
Release Status
Final
Overall IR
5 - Water is impaired or threatened and a TMDL is needed.
Trend
Unknown
Created
12/21/2021 9:26:51 AM
Updated
1/28/2022 2:42:42 PM
Use Support
Class A1
Recreation - Primary contact
Not Supported
Support Level
Not 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
Not Supported
Support Level
Not 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
Impairment Delistings
No delistings for this assessment cycle.
Documentation
Assessment Summary

The Class A1 use remains assessed as “not supported” due to levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The Class BWW1 use remains assessed as “not supported” based on biological sampling data. The biological Class BWW1 use assessment indicated "full support" and was a monitored assessment because the FIBI samples used to complete the assessment were all collected in the last five years. However, until a monitored BMIBI assessment shows FS, this segment will remain in Category 5bt. Continuous dissolved oxygen monitoring data for the Class BWW1 use also shows full support. The Class HH use remains assessed as “fully supported” based on fish tissue sampling data.

Assessment Explanation

Data Sources:

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

Iowa DNR

6

FT

See Below

361

Maquoketa River

South of Delhi


Class A1 – Indicator Bacteria: 2012-2013

Site ID

Data Source ID

# Samples / # Years

2012 Geometric Mean

2013 Geometric Mean

Annual Geometric Mean Violation

# Violations

% Violations

Significantly >10% Violations

Assessment Type

Support Level

15280023

6

14 / 2

91

314

Yes

6

43%

Yes

Evaluated

Not

16280001

6

14 / 2

495

444

Yes

11

79%

Yes

Evaluated

Not

15280004

6

12 / 2

141

263

Yes

6

50%

Yes

Evaluated

Not


Class A1 - pH: 2012-2013

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: 2012-2013

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:

Site ID

Date

Drainage Area (mi2)

Ecoregion

Major Drainage

BM Sample Gear

BMIBI score

BMIBI Class

47c BMIBI BIT

BMIBI Pass/Fail

323

8/22/19

274

47c

MS

Art Sub

72

Good

52

Pass

323

9/25/13

274

47c

MS

Art Sub

48

Fair

52

Fail

323

9/24/12

274

47c

MS

Art Sub

57

Good

52

Pass

Fish:

Site ID

Date

Drainage Area (mi2)

Ecoregion

Major Drainage

Riffle Stream?

FIBI score

FIBI Class

47c FIBI BIT

FIBI Pass/Fail

977

7/29/20

213

47c

MS

Undetermined

76

Excellent

44

Pass

1017

7/27/20

305

47c

MS

Undetermined

76

Excellent

44

Pass

323

8/22/19

274

47c

MS

Undetermined

76

Excellent

44

Pass

1016

7/31/19

351

47c

MS

Undetermined

76

Excellent

44

Pass

1015

7/30/19

347

47c

MS

Undetermined

76

Excellent

44

Pass

1017

7/25/19

305

47c

MS

Undetermined

76

Excellent

44

Pass

977

7/22/19

213

47c

MS

Undetermined

76

Excellent

44

Pass

1017

7/13/18

305

47c

MS

Undetermined

76

Excellent

44

Pass

977

7/12/18

213

47c

MS

Undetermined

76

Excellent

44

Pass

1017

8/10/17

305

47c

MS

Undetermined

76

Excellent

44

Pass

977

7/19/17

213

47c

MS

Undetermined

76

Excellent

44

Pass

1016

8/9/16

351

47c

MS

Undetermined

76

Excellent

44

Pass

1015

8/8/16

347

47c

MS

Undetermined

76

Excellent

44

Pass

1017

7/15/16

305

47c

MS

Undetermined

76

Excellent

44

Pass

Overall:

Community

Assessment Type

Assessment Result

Support Level

IR Category

Reason

Benthic Macroinvertebrates

Evaluated

Pass (2/3)

Full

Assessment was monitored because the FIBI samples used to complete the

Fish

Monitored

Pass (14/14)

Full

5bt

assessment were all collected in the last five years. Until a monitored BMIBI

Overall

Monitored

Pass

Full

assessment shows FS, this segment will remain in Category 5bt.

Class BWW1 – Continuous DO Monitoring:

Site ID

Data Source ID

# Days Monitoring (2016/2017/2018/ 2019/2020)

DO Criteria Type

# 2016 violations/

Violations needed for impairment

# 2017 violations/

Violations needed for impairment

# 2018 violations/

Violations needed for impairment

# 2019 violations/

Violations needed for impairment

# 2020 violations/

Violations needed for impairment

Violates Annual Significantly >10% Rule?

Assessment Type

Support Level

24 hr

NA

NA

0/6

0/4

NA

No

323

6

0/0/27/17/0

16 hr

NA

NA

0/6

0/4

NA

No

Monitored

Full


Class HH - Fish Tissue Sampling:

Site ID

Biopart

Year

Species

# in sample / # of samples

Avg Length (cm)

(Avg) Hg (ppm)

Chlordane (ppm)

Sum PCBs (ppm)

279

fillet

2011

channel catfish

4

44.5

0.169

0.03

0.09

361

tissue plug

2019

walleye

15

46.4

0.222

361

tissue plug

2020

northern pike

7

69.0

0.213

Support Level

Full

Monitoring and Methods
Assessment Key Dates
5/7/2012
Non-fixed Monitoring Start Date
11/18/2013
Non-fixed Monitoring End Date
7/1/2011
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
7/25/2019
Biological Monitoring
7/29/2020
Biological Monitoring
7/27/2020
Biological Monitoring
8/22/2019
Biological Monitoring
7/31/2019
Biological Monitoring
7/30/2019
Biological Monitoring
7/19/2017
Biological Monitoring
8/10/2017
Biological Monitoring
7/12/2018
Biological Monitoring
7/13/2018
Biological Monitoring
7/22/2019
Biological Monitoring
7/1/2019
Fish Tissue Monitoring
7/1/2020
Fish Tissue Monitoring
Methods
150
Monitoring data more than 5 years old
222
Non-fixed-station monitoring (conventional during key seasons and flows)
260
Fish tissue analysis
315
Regional reference site approach
320
Benthic macroinvertebrate surveys
330
Fish surveys
420
Indicator bacteria monitoring