East Fork Des Moines River IA 04-EDM-1882
from County Road B63 (aka 130th) (S23 T94N R29W Kossuth Co) to outfall of the Algona wastewater treatment plant (WWTP)
- Assessment Cycle
- 2024
- Release Status
- Pending
- Data Collection Period
- Overall IR Category
- 4 - Water is impaired or threatened and a TMDL has been completed or is not needed.
- Trend
- Unknown
- Created
- 11/1/2023 8:13:04 AM
- Updated
- 1/24/2024 8:47:03 AM
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 "fully supported" based on biological sampling data and water quality monitoring data. The Class HH use was assessed as "fully supported" based on water quality monitoring data. Note: A TMDL for indicator bacteria (E. coli) was approved by EPA in January 2009; therefore, the bacteria impairment for this segment was placed in IR Category 4a (impaired; TMDL approved).
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 10550001 East Fork of The Des
Moines River near St. Joseph Iowa DNR 6 BIO See Below 223 East Fork of The Des
Moines River St. Joseph 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 10550001 6 8/7/8 104 95 202 YES 2 / 3 2 / 3 5 / 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 10550001 6 36 / 3 7.1 8.6 8 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 10550001 6 Chloride 36 / 3 13 70 33 NA 0 / 0 7 NO Mon Full 10550001 6 Dissolved Oxygen 36 / 3 4.5 17.4 10.2 1 NA / NA 7 NO Mon Full 10550001 6 pH 36 / 3 7.1 8.6 8 0 NA / NA 7 NO Mon Full 10550001 6 Sulfate 36 / 3 19 120 51 0 NA / NA 7 NO Mon Full 10550001 6 Temperature 36 / 3 0 27.3 11.7 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 10550001 6 Ammonia 36 / 3 0.31 0.06 0.02 0 / 0 NO Mon Full 10550001 6 Cadmium 20 / 3 0.5 0.5 0.5 0 / 0 NO Mon Full 10550001 6 Chromium 20 / 3 1.7 0.7 0.7 0 / 0 NO Mon Full 10550001 6 Lead 20 / 3 1 0.93 1 0 / 0 NO Mon Full 10550001 6 Nickel 20 / 3 3.6 2.3 2.2 0 / 0 NO Mon Full 10550001 6 Selenium 18 / 2 5 1.7 2 0 / 0 NO Mon Full 10550001 6 Silver 20 / 3 1 0.902 1 0 / 0 NO Mon Full 10550001 6 Zinc 20 / 3 1.9 0.7 0.5 0 / 0 NO Mon Full Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47b BMIBI BIT BMIBI Pass/Fail 223 7/22/20 977 47b MS Floating Art Sub 78 Excellent 62 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (1/1) Full Assessment was evaluated because it was based on a single
sample and Overall Evaluated Pass Full 1 the drainage area of the site was greater than the calibrated
range. Site ID Data Source ID # Days Monitoring (2016) DO Criteria Type # 2016 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 0/6 No 223 6 29 16 hr 0/6 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 10550001 6 Selenium 18 / 2 5 1.7 2 4 NO Mon Full
Class A1 - Indicator Bacteria:
Class A1 - pH:
Class BWW1 - Binomial Parameters:
Class BWW1 - Toxic Parameters:
Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Overall:
Class BWW1- Continuous DO Monitoring:
Class HH-F - Toxic Parameters:
Assessment Key Dates
1/9/2020 | Monitoring Start |
12/7/2022 | Monitoring End |
7/22/2020 | Biological Monitoring |
1/31/2009 | TMDL Completed |
Methods
200 | Physical/Chemical Monitoring |
315 | Regional reference site approach |
320 | Benthic macroinvertebrate surveys |
420 | Indicator bacteria monitoring |