Boone River IA 04-UDM-1252
mouth (Webster Co.) to Hwy 17 in S18 T88N R25W Hamilton Co.
- Assessment Cycle
- 2020
- Release Status
- Final
- Data Collection Period
- Overall IR Category
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 9/15/2020 2:04:50 PM
- Updated
- 10/19/2020 6:44:08 AM
Assessment Summary
The Class A1 use was assessed as "partially supported" based on levels of indicator bacteria (E. coli) that violated state water quality criteria. The Class BWW1 use was assessed as "partially supported” based on biological sampling data. The Class HH use was assessed as "fully supported" based on water quality monitoring data.
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 10400001 Boone River near Stratford
Iowa DNR 6 BIO See Below 139 Boone River Bells Mill Park – Stratford Iowa DNR 6 BIO See Below 338 Boone River Webster City – REMAP #10 Iowa DNR 6 BIO See Below 913 Boone River Stratford 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 10400001 6 22 / 3 144.62 105.93 121.52 Yes 8 36% 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 10400001 6 35 / 3 8.7 8.2 8.2 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 10400001 6 Ammonia 35 / 3 0.89 0.07 0.02 0 / 0 0% / 0% No Monitored Full 10400001 6 Chloride 36 / 3 40 22 21 0 / 0 0% / 0% No Monitored Full 10400001 6 Dissolved oxygen 36 / 3 16.9 11.1 10.6 NA / 0 NA / 0% No Monitored Full 10400001 6 pH 35 / 3 8.7 8.2 8.2 0 / NA 0% / NA No Monitored Full 10400001 6 Sulfate 36 / 3 78 32.7 28 0 / NA 0% / NA No Monitored Full 10400001 6 Temperature 36 / 3 29 12 13 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 10400001 6 Aluminum 9 / 2 6 1.09 0.49 0 / 0 0% / 0% No Evaluated Full 10400001 6 Arsenic 9 / 2 2.6 1.9 1.8 0 / 0 0% / 0% No Evaluated Full 10400001 6 Cadmium 9 / 2 0.025 0.025 0.025 0 / 0 0% / 0% No Evaluated Full 10400001 6 Chromium 9 / 2 1.3 0.71 0.72 0 / 0 0% / 0% No Evaluated Full 10400001 6 Copper 9 / 2 3 1.36 1.2 0 / 0 0% / 0% No Evaluated Full 10400001 6 Lead 9 / 2 0.11 0.061 0.06 0 / 0 0% / 0% No Evaluated Full 10400001 6 Nickel 9 / 2 4 3 2.9 0 / 0 0% / 0% No Evaluated Full 10400001 6 Selenium 9 / 2 2.8 1.6 1.5 0 / 0 0% / 0% No Evaluated Full 10400001 6 Zinc 9 / 2 2.5 1.29 1.3 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 338 9/7/17 849 47b MS/WW Hess 59 Good 62 Fail 139 7/31/17 903 47b MS/WW Hess 63 Good 62 Pass 913 7/19/17 887 47b MS/WW Hess 53 Fair 62 Fail 913 8/28/14 887 47b MS/WW Hess 50 Fair 62 Fail 913 8/28/14 887 47b MS/WW ArtSub 46 Fair 62 Fail Fish: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/ Fail 338 9/7/17 849 47b MS/WW Yes 67 Good 53 Pass 139 7/31/17 903 47b MS/WW Yes 42 Fair 53 Fail 139 8/28/12 903 47b MS/WW Yes 62 Good 53 Pass Overall: Community Assessment Type Assessment Result Support Level Earned IR Category Actual IR Category Reason Benthic
Macroinvertebrates Evaluated Fail (1/5) Partial Fish Evaluated Pass (2/3) Full Overall Evaluated Fail Partial 3bu 3bu Assessment
is evaluated because the drainage areas of the sample sites were larger than
the calibrated range. 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 10400001 6 Cadmium 9 / 2 0.025 0.025 0.025 9 No All Non-Detect Full 10400001 6 Chromium 9 / 2 1.3 0.71 0.72 0 No Evaluated Full 10400001 6 Copper 9 / 2 3 1.36 1.2 0 No Evaluated Full 10400001 6 Nickel 9 / 2 4 3 2.9 0 No Evaluated Full 10400001 6 Selenium 9 / 2 2.8 1.6 1.5 0 No Evaluated Full 10400001 6 Zinc 9 / 2 2.5 1.29 1.3 0 No Evaluated Full
Assessment Key Dates
8/28/2012 | Biological Monitoring |
8/28/2014 | Biological Monitoring |
1/12/2016 | Fixed Monitoring Start Date |
12/3/2018 | Fixed Monitoring End Date |
7/19/2017 | Biological Monitoring |
7/31/2017 | Biological Monitoring |
9/7/2017 | Biological Monitoring |
Methods
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 |
330 | Fish surveys |
420 | Indicator bacteria monitoring |