Boone River IA 04-UDM-1252
mouth (Webster Co.) to Hwy 17 in S18 T88N R25W Hamilton Co.
- Assessment Cycle
- 2022
- Release Status
- Final
- Data Collection Period
- Overall IR Category
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 12/27/2021 12:47:49 PM
- Updated
- 1/25/2022 2:46:20 PM
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 "WINOFI” based on biological sampling data. All other designated uses were "not assessed."
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 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 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 10400001 6 7/7/8 122 41 55 NO 3 / 3 1 / 3 1 / 3 YES 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 10400001 6 36 / 3 7.2 8.7 8.1 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 10400001 6 Ammonia 36 / 3 0.02 0.89 0.08 NA 0 / 0 7 NO Monitored Full 10400001 6 Chloride 36 / 3 7 75 24 NA 0 / 0 7 NO Monitored Full 10400001 6 Dissolved Oxygen 36 / 3 7.8 14.7 10.8 0 NA / NA 7 NO Monitored Full 10400001 6 pH 36 / 3 7.2 8.7 8.1 0 NA / NA 7 NO Monitored Full 10400001 6 Sulfate 36 / 3 8.9 120 36.9 0 NA / NA 7 NO Monitored Full 10400001 6 Temperature 36 / 3 0 30.9 11.9 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 10400001 6 Aluminum 14 / 3 6 0.863 0.235 0 / 0 NO Monitored Full 10400001 6 Arsenic 13 / 3 2.6 1.7 1.6 0 / 0 NO Monitored Full 10400001 6 Cadmium 13 / 3 0.08 0.03 0.02 0 / 0 NO Monitored Full 10400001 6 Chromium 13 / 3 1.5 0.9 0.9 0 / 0 NO Monitored Full 10400001 6 Lead 13 / 3 0.23 0.11 0.1 0 / 0 NO Monitored Full 10400001 6 Nickel 13 / 3 4.5 3.3 3.3 0 / 0 NO Monitored Full 10400001 6 Silver 13 / 3 0.025 0.025 0.025 0 / 0 NO Monitored Full 10400001 6 Zinc 13 / 3 2.7 1.7 1.7 0 / 0 NO Monitored 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 338 9/7/17 849 47b MS Hess 59 Good 62 Fail 139 7/31/17 903 47b MS Hess 63 Good 62 Pass 913 7/19/17 887 47b MS Hess 53 Fair 62 Fail Fish: BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/Fail 338 9/7/17 849 47b MS Yes 67 Good 53 Pass 139 7/31/17 903 47b MS Yes 42 Fair 53 Fail Overall: Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Fail (1/3) Not
Fish Evaluated Fail (1/2) Not Assessment
was evaluated because the drainage areas of the sample sites Overall Evaluated Fail WINOFI 3bu were larger 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 NA 0/5 NA NA NA No
338 6 0/22/0/0/0 16 hr NA 05 NA NA NA No Evaluated Full
Class BWW1 - Biological Sampling:
Class HH - No Data
Assessment Key Dates
1/10/2018 | Fixed Monitoring Start Date |
7/19/2017 | Biological Monitoring |
7/31/2017 | Biological Monitoring |
9/7/2017 | Biological Monitoring |
12/9/2020 | Fixed Monitoring End Date |
Methods
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 |
330 | Fish surveys |
380 | Quantitative physical habitat assessment |
420 | Indicator bacteria monitoring |