Boyer River IA 06-BOY-1500
mouth (Pottawattamie Co.) to confluence with Willow R. in S28 T78N R44W Harrison Co.
- Assessment Cycle
- 2024
- Release Status
- Pending
- Data Collection Period
- Overall IR Category
- 3 - Insufficient data exist to determine whether any designated uses are met.
- Trend
- Unknown
- Created
- 11/1/2023 8:13:17 AM
- Updated
- 2/2/2024 12:44:25 PM
Assessment Summary
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 2021 391 Boyer River
Iowa DNR 6 BIO See Below 391 Boyer River Missouri Valley (REMAP #74)
Class A1 - No Data BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal BM Sample Gear BMIBI score BMIBI Class 47d BMIBI BIT BMIBI Pass/Fail 391 10/5/21 1091.6 47d MO/WW Floating ArtSub 23 Poor 54 Fail BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 47d FIBI BIT FIBI Pass/Fail 391 10/5/21 1091.6 47d MO/WW NA 23 Poor 31 Fail Community Assessment Type Assessment Result Support Level IR Category Reason Benthic Macroinvertebrates Evaluated Fail (0/1) WINOFI Fish Evaluated Fail (0/1) WINOFI Assessment was evaluated because the
drainage area Overall Evaluated Fail WINOFI 3bu of the sample site was larger than the
calibrated range. Class BWW1- Continuous
DO Monitoring: Site ID Data Source ID # Days Monitoring (2021) DO Criteria Type # 2021 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 0/4 No 391 6 15 16 hr 0/4 No Evaluated Full
Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall:
Class HH - No Data
Assessment Key Dates
10/5/2021 | Biological Monitoring |
9/28/2021 | Monitoring Start |
10/12/2021 | Monitoring End |
Methods
200 | Physical/Chemical Monitoring |
315 | Regional reference site approach |
320 | Benthic macroinvertebrate surveys |
330 | Fish surveys |