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
- 2020
- 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
- 6/9/2020 12:49:54 PM
- Updated
- 10/14/2020 6:54:33 AM
Assessment Summary
The Class A1 use was assessed as "partially supported" due to levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The Class BWW1 use was assessed as "partially supported" based on biological sampling data and due to a fish kill investigation. The Class HH use was assessed as "fully supported" based 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
Sources of
Data: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 WQ CY 2016-2018 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 / # Years 2016 Geometric Mean 2017 Geometric Mean 2018 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level 10550001 6 21 / 3 274.82 252.69 132.97 Yes 8 38% Yes Monitored Partial Class A - pH: Site ID Data Source ID # Samples / # Years Maximum Value Mean Value Median Value # Violations % Violations Significantly >10% Violations Assessment Type Support Level 10550001 6 36 / 3 8.4 8 8.1 0 0% No Monitored 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 10550001 6 Ammonia 36 / 3 0.97 0.07 0.02 0 / 0 0% / 0% No Monitored Full 10550001 6 Chloride 36 / 3 40 25 24 0 / 0 0% / 0% No Monitored Full 10550001 6 Dissolved oxygen 36 / 3 13.2 9.8 9.8 NA / 0 NA / 0% No Monitored Full 10550001 6 pH 36 / 3 8.4 8 8.1 0 / NA 0% / NA No Monitored Full 10550001 6 Sulfate 36 / 3 74 36 32 0 / NA 0% / NA No Monitored Full 10550001 6 Temperature 36 / 3 25.5 11.4 10.8 0 / 0 0% / 0% 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 % Acute/ Chronic Violations >1 Acute / Chronic Violation Assessment Type Support Level 10550001 6 Aluminum 9 / 2 5.3 0.821 0.2 0 / 0 0% / 0% No Evaluated Full 10550001 6 Arsenic 9 / 2 3.1 2.2 2.3 0 / 0 0% / 0% No Evaluated Full 10550001 6 Cadmium 9 / 2 0.05 0.028 0.025 0 / 0 0% / 0% No Evaluated Full 10550001 6 Chromium 9 / 2 1.4 0.71 0.76 0 / 0 0% / 0% No Evaluated Full 10550001 6 Copper 9 / 2 3.2 1.38 1.1 0 / 0 0% / 0% No Evaluated Full 10550001 6 Lead 9 / 2 1.2 0.206 0.07 0 / 0 0% / 0% No Evaluated Full 10550001 6 Nickel 9 / 2 4.1 3.2 3.2 0 / 0 0% / 0% No Evaluated Full 10550001 6 Selenium 9 / 2 2.9 1.9 1.7 0 / 0 0% / 0% No Evaluated Full 10550001 6 Zinc 9 / 2 5.3 1.57 1 0 / 0 0% / 0% No Evaluated Full Class
BWW1 - Biological Sampling: Benthic
Macroinvertebrates: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal BM Sample Gear BMIBI score BMIBI Class 47b BMIBI BIT BMIBI Pass/ Fail 223 9/1/16 977 47b MS/WW Hess 65 Good 62 Pass 223 9/1/16 977 47b MS/WW Float ArtSub 66 Good 62 Pass 223 8/11/16 977 47b MS/WW Float ArtSub 56 Good 62 Fail 223 10/15/14 977 47b MS/WW Float ArtSub 40 Fair 62 Fail Overall: Community Assessment Type Assessment Result Support Level Earned IR Category Actual IR Category Reason Benthic
Macroinvertebrates Evaluated Fail (2/4) Partial 3bu 3bu Assessment
is evaluated because the drainage area of the sample site was larger than the
calibrated range. Class
BWW1 – Fishkill Assessment: 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-F -
Toxic Parameters: 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 Cadmium 9 / 2 0.05 0.028 0.025 8 No Evaluated Full 10550001 6 Chromium 9 / 2 1.4 0.71 0.76 0 No Evaluated Full 10550001 6 Copper 9 / 2 3.2 1.38 1.1 0 No Evaluated Full 10550001 6 Nickel 9 / 2 4.1 3.2 3.2 0 No Evaluated Full 10550001 6 Selenium 9 / 2 2.9 1.9 1.7 0 No Evaluated Full 10550001 6 Zinc 9 / 2 5.3 1.57 1 0 No Evaluated Full
Assessment Key Dates
1/12/2016 | Fixed Monitoring Start Date |
12/3/2018 | Fixed Monitoring End Date |
10/15/2014 | 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 |
230 | Fixed station physical/chemical (conventional plus toxic pollutants) |
315 | Regional reference site approach |
320 | Benthic macroinvertebrate surveys |
420 | Indicator bacteria monitoring |