Maquoketa River IA 01-MAQ-14
from N. Fk. Maquoketa R. to confluence with Farm Cr. in S10 T85N R1W Jones Co.
- Assessment Cycle
- 2024
- Release Status
- Pending
- Data Collection Period
- Overall IR Category
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 11/1/2023 8:12:24 AM
- Updated
- 1/18/2024 1:31:38 PM
Assessment Summary
The Class A1 use was assessed as "not supported" due to levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The Class BWW1 use was assessed as "not supported" due the apparent elimination of the freshwater mussel community from this river segment. The Class HH use was assessed as "fully supported" based on water quality monitoring data. Note: A TMDL for pathogen indicators in this segment of the Maquoketa River was prepared by DNR and approved by EPA in 2006.
Assessment Explanation
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 WQ CY 2020-2022 10490004 Maquoketa River west
of Maquoketa Iowa DNR 6 WQ CY 2021 389 Maquoketa River Canton – REMAP #62 Iowa DNR 6 BIO See Below 389 Maquoketa River Canton – REMAP #62 Iowa DNR 6 BIO See Below 1151 Maquoketa River 0.9 mi upstream of Hwy
61 bridge - Maquoketa
Class A1 - Indicator Bacteria: Site ID Data Source ID # Samples per Year (2020/ 2021/2022) 2020 Geometric Mean 2021 Geometric Mean 2022 Geometric Mean Violates Annual Geometric Mean? # 2020 SSM violations / SSM Violations needed for impairment # 2021 SSM violations / SSM Violations needed for impairment # 2022 SSM violations / SSM Violations needed for impairment Violates Annual SSM Significantly >10% Rule? Assessment Type Support Level 10490004 6 8/8/8 728 209 231 YES 5 / 3 4 / 3 3 / 3 YES Mon Not Site ID Data Source ID # Samples / # Years Minimum Value Maximum Value Mean Value # Violations Violations needed for impairment Violates Significantly >10% Rule? Assessment Type Support Level 10490004 6 36 / 3 7.9 8.5 8.2 0 7 NO Mon Full Site ID Data Source ID Parameter Name # Samples / # Years Minimum Value Maximum Value Mean Value # Violations # Acute / Chronic Violations Violations needed for impairment Violates Significantly >10% Rule? Assessment Type Support Level 10490004 6 Chloride 36 / 3 16 23 19 NA 0 / 0 7 NO Mon Full 10490004 6 Dissolved Oxygen 36 / 3 7.9 14.6 11.4 0 NA / NA 7 NO Mon Full 10490004 6 pH 36 / 3 7.9 8.5 8.2 0 NA / NA 7 NO Mon Full 10490004 6 Sulfate 36 / 3 14 24 20 0 NA / NA 7 NO Mon Full 10490004 6 Temperature 36 / 3 0 28.1 12.3 0 NA / NA 7 NO Mon Full Site ID Data Source ID Parameter Name # Samples / # Years Maximum Value Mean Value Median Value # Acute / Chronic Violations >1 Acute / Chronic Violation Assessment Type Support Level 10490004 6 Ammonia 36 / 3 0.25 0.04 0.02 0 / 0 NO Mon Full 10490004 6 Cadmium 20 / 3 0.5 0.5 0.5 0 / 0 NO Mon Full 10490004 6 Chromium 20 / 3 1.5 0.7 0.6 0 / 0 NO Mon Full 10490004 6 Lead 20 / 3 1 0.93 1 0 / 0 NO Mon Full 10490004 6 Nickel 20 / 3 3.4 1 0.8 0 / 0 NO Mon Full 10490004 6 Selenium 18 / 2 2 0.7 0.5 0 / 0 NO Mon Full 10490004 6 Silver 20 / 3 1 0.902 1 0 / 0 NO Mon Full 10490004 6 Zinc 20 / 3 7.3 1.3 0.5 0 / 0 NO Mon Full Benthic
Macroinvertebrates: Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47f BMIBI BIT BMIBI Pass/Fail 389 9/29/21 753.8 47f MS Floating Art Sub 51 Fair 51 Pass 1151 8/3/21 950 47f MS Hess 56 Good 51 Pass 389 10/13/20 753.8 47f MS Floating Art Sub 59 Good 51 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (3/3) Full Assessment was evaluated because the
drainage areas of the sample sites Overall Evaluated Pass Full 1 were greater than the calibrated range. Freshwater Mussel Survey # Freshwater Mussel Species # Freshwater Mussel Species Increase/Decrease % Freshwater Mussel Species Increase/Decrease Assessment Type Support Level IR Category 1984-85 (Frest 1987) 5 1998-99
(Arbuckleet al. 2000) 0 -5 -100% Evaluated Not 5b As presented by
Arbuckle et al. (2000), the potential causes of declines in species richness
of Iowa's freshwater mussels include siltation, destabilization of stream
substrate, stream flow instability, and high instream levels of nutrients
(phosphorus and nitrogen). Their study also suggested the importance of
stream shading provided by riparian vegetation to mussel species richness. Class BWW1- Continuous
DO Monitoring: Site ID Data Source ID # Days Monitoring (2021) DO Criteria Type # 2021 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 0/4 No 389 6 16 16 hr 0/4 No Evaluated Full Site ID Data Source ID Parameter Name # Samples / # Years Maximum Value Mean Value Median Value Number of Non - Detects Mean Value > Criterion or MCL Assessment Type Support Level 10490004 6 Selenium 18 / 2 2 0.7 0.5 14 NO Mon Full
Class A1 – pH:
Class BWW1 - Binomial Parameters:
Class BWW1 - Toxic Parameters:
Class BWW1 - Biological Sampling:
Overall:
Class BWW1 – Freshwater Mussel Sampling:
Class
HH-F - Toxic Parameters:
Assessment Key Dates
9/30/1985 | Biological Monitoring |
9/30/1999 | Biological Monitoring |
1/6/2020 | Monitoring Start |
12/5/2022 | Monitoring End |
8/3/2021 | Biological Monitoring |
10/13/2020 | Biological Monitoring |
6/1/2006 | TMDL Completed |
9/29/2021 | Biological Monitoring |
9/14/2021 | Monitoring Start |
9/29/2021 | Monitoring End |
Methods
150 | Monitoring data more than 5 years old |
200 | Physical/Chemical Monitoring |
315 | Regional reference site approach |
320 | Benthic macroinvertebrate surveys |
420 | Indicator bacteria monitoring |