Boone River IA 04-UDM-1252
mouth (Webster Co.) to Hwy 17 in S18 T88N R25W Hamilton 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 8:13:00 AM
- Updated
- 12/20/2023 6:53:04 AM
Assessment Summary
The Class A1 use was assessed as "not supported" based on levels of indicator bacteria (E. coli) that violated 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.
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 10400001 Boone
River near Stratford
Iowa DNR 6 BIO See Below 139 Boone
River Bells
Mill Park - Stratford 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 10400001 6 8/7/8 55 46 136 YES 1 / 3 0 / 3 2 / 3 NO 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 10400001 6 36 / 3 7.2 8.8 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 10400001 6 Chloride 36 / 3 16 160 40 NA 0 / 0 7 NO Mon Full 10400001 6 Dissolved Oxygen 36 / 3 7.6 16.3 11.4 0 NA / NA 7 NO Mon Full 10400001 6 pH 36 / 3 7.2 8.8 8.2 0 NA / NA 7 NO Mon Full 10400001 6 Sulfate 36 / 3 16 150 60 0 NA / NA 7 NO Mon Full 10400001 6 Temperature 36 / 3 0 30.9 13.3 0 NA / NA 7 NO Mon Full 10400001 6 Total suspended solids 36 / 3 0.5 170 24.5 NA 0 / 0 NULL 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 10400001 6 Ammonia 36 / 3 1.1 0.1 0.02 0 / 0 NO Mon Full 10400001 6 Cadmium 20 / 3 0.5 0.5 0.5 0 / 0 NO Mon Full 10400001 6 Chromium 20 / 3 1.3 0.6 0.5 0 / 0 NO Mon Full 10400001 6 Lead 20 / 3 1 0.92 1 0 / 0 NO Mon Full 10400001 6 Nickel 20 / 3 3.2 1.9 1.8 0 / 0 NO Mon Full 10400001 6 Selenium 18 / 2 4 1.5 1 0 / 0 NO Mon Full 10400001 6 Silver 20 / 3 1 0.902 1 0 / 0 NO Mon Full 10400001 6 Zinc 20 / 3 1.9 0.7 0.5 0 / 0 NO Mon Full Benthic
Macroinvertebrates: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47b BMIBI BIT BMIBI Pass/Fail 139 9/29/21 903.3 47b MS Hess 63 Good 62 Pass 139 7/20/21 903.3 47b MS Hess 70 Good 62 Pass BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/Fail 139 9/29/21 903.3 47b MS Yes 74 Excellent 53 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (2/2) Full Fish Evaluated Pass (1/1) Full Assessment was evaluated because the
drainage area Overall Evaluated Pass Full 1 of the sample site was larger than the
calibrated range. Class BWW1- Continuous
DO Monitoring: Site ID Data Source ID # Days Monitoring (2017) DO Criteria Type # 2017 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 0/5 No 338 6 22 16 hr 05 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 10400001 6 Selenium 18 / 2 4 1.5 1 7 NO Mon Full
Class A1 - Indicator Bacteria:
Class A1 – pH:
Class BWW1 - Binomial Parameters:
Class BWW1 - Toxic Parameters:
Class BWW1 - Biological Sampling:
Fish:
Overall:
Class HH-F - Toxic Parameters:
Assessment Key Dates
1/9/2020 | Monitoring Start |
9/29/2021 | Biological Monitoring |
7/20/2021 | Biological Monitoring |
12/7/2022 | Monitoring End |
Methods
200 | Physical/Chemical Monitoring |
315 | Regional reference site approach |
320 | Benthic macroinvertebrate surveys |
330 | Fish surveys |
420 | Indicator bacteria monitoring |