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
- 2022
- Release Status
- Final
- 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
- 12/28/2021 7:04:44 AM
- Updated
- 1/28/2022 2:50:51 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 "WINOFI" due to a fish kill investigation. All other designated uses were "not assessed." 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 2018-2020 10550001 East Fork of The Des Moines River near St. Joseph
Iowa DNR 6 BIO See Below 223 East Fork Des Moines River St. Joseph Class A1 -
Indicator Bacteria: Site ID Data Source ID # Samples per Year (2018/ 2019/2020) 2018 Geometric Mean 2019 Geometric Mean 2020 Geometric Mean Violates Annual Geometric Mean? # 2018 SSM violations / SSM Violations
needed for impairment # 2019 SSM violations / SSM Violations
needed for impairment # 2020 SSM violations / SSM Violations
needed for impairment Violates Annual SSM Significantly >10%
Rule? Assessment Type Support Level 10550001 6 7/7/8 133 123 104 YES 1 / 3 1 / 3 2 / 3 NO Monitored Not Class A - pH 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 Monitored Full Class BWW1 -
Conventional Parameters: 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 Ammonia 36 / 3 0.02 0.97 0.08 NA 0 / 0 7 NO Monitored Full 10550001 6 Chloride 36 / 3 9.4 46 22.1 NA 0 / 0 7 NO Monitored Full 10550001 6 Dissolved Oxygen 36 / 3 6.5 17.4 9.9 0 NA / NA 7 NO Monitored Full 10550001 6 pH 36 / 3 7.1 8.6 8 0 NA / NA 7 NO Monitored Full 10550001 6 Sulfate 36 / 3 14 78 36 0 NA / NA 7 NO Monitored Full 10550001 6 Temperature 36 / 3 0 27.3 10.7 0 NA / NA 7 NO Monitored Full Class BWW1 -
Toxic Parameters: 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 Aluminum 14 / 3 5.3 0.6 0.2 0 / 0 NO Monitored Full 10550001 6 Arsenic 13 / 3 3.1 1.9 1.8 0 / 0 NO Monitored Full 10550001 6 Cadmium 13 / 3 0.05 0.03 0.02 0 / 0 NO Monitored Full 10550001 6 Chromium 13 / 3 1.6 0.9 1 0 / 0 NO Monitored Full 10550001 6 Lead 13 / 3 1.2 0.2 0.1 0 / 0 NO Monitored Full 10550001 6 Nickel 13 / 3 4.5 3.6 3.6 0 / 0 NO Monitored Full 10550001 6 Silver 13 / 3 0.025 0.025 0.025 0 / 0 NO Monitored Full 10550001 6 Zinc 13 / 3 5.3 2 1.7 0 / 0 NO Monitored 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 223 9/1/16 977 47b MS Floating Art Sub 66 Good 62 Pass 223 9/1/16 977 47b MS Hess 65 Good 62 Pass 223 8/11/16 977 47b MS Floating Art Sub 56 Good 62 Fail Overall: Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (3/4) Full Assessment was evaluated
because the drainage area of the site used Overall Evaluated Pass Full 1 for the assessment was
greater than the calibrated range. 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 0/6 NA NA NA NA No
223 6 29/0/0/0/0 16 hr 0/6 NA NA NA NA No Evaluated Full The Class BWW1 use assessment based on the
2013 fish kill placed this segment in Category 3b. Because the cause of the
fish kill was not identified, or
the fish kill was attributed to a non-pollutant cause (e.g., winterkill), the
assessment type is “evaluated.” Segments assessed using “evaluated” assessments
are placed in Category 3b and are added to the state list of waters in need of
further investigation. If no additional fish kills are reported in the segment
for a 10 year period (2023), the Category will be changed from 3b to 3a (water
not assessed). For more information on the 2013 fish kill, see: https://programs.iowadnr.gov/fishkill/Events/897 Class HH – No Data
Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Class BWW1 – Fish kill Assessment:
Assessment Key Dates
| 1/10/2018 | Fixed Monitoring Start Date |
| 12/9/2020 | Fixed Monitoring End Date |
| 7/22/2020 | Biological Monitoring |
| 8/11/2016 | Biological Monitoring |
| 9/1/2016 | Biological Monitoring |
| 1/31/2009 | TMDL Completed |
| 10/6/2013 | Fish Kill |
Methods
| 120 | Surveys of fish and game biologists/other professionals |
| 140 | Incidence of spills and/or fish kills |
| 150 | Monitoring data more than 5 years old |
| 222 | Non-fixed-station monitoring (conventional during key seasons and flows) |
| 230 | Fixed station physical/chemical (conventional plus toxic pollutants) |
| 315 | Regional reference site approach |
| 320 | Benthic macroinvertebrate surveys |
| 420 | Indicator bacteria monitoring |