Floyd River IA 06-FLO-1554
from city of Alton (north line S11 T94N R44W Sioux Co.) to confluence with North Fork Floyd R. in S9 T97N R41W O'Brien Co.
- Cycle
- 2024
- Release Status
- Final
- Overall IR
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 11/1/2023 8:12:26 AM
- Updated
- 2/6/2024 8:31:45 AM
The Class BWW2 use was assessed as “not supported” based on biological sampling data. All other designated uses were "not assessed."
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 BIO See Below 355 Floyd River Sanborn – REMAP #67 Iowa DNR 6 BIO/WQ See Below 364 Floyd River Alton – REMAP #85 Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 47a BMIBI BIT BMIBI Pass/Fail 355 8/18/20 43.9 47a MO Floating Art Sub 26 Poor 54 Fail 364 8/17/20 260.6 47a MO Floating Art Sub 62 Good 54 Pass Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47a FIBI BIT FIBI Pass/Fail 355 8/18/20 43.9 47a MO NA 28 Fair 43 Fail 364 8/17/20 260.6 47a MO NA 36 Fair 43 Fail Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Fail (1/2) Not Fish Evaluated Fail (0/2) Not Assessment was evaluated because the samples
used to Overall Evaluated Fail Not 5bt complete the assessment were collected in a
single year. Site ID Data Source ID # Days Monitoring (2020) DO Criteria Type # 2020 violations / Violations needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 0/5 No 355 6 21 16 hr 0/5 No Monitored Full 24 hr 0/5 No 364 6 19 16 hr 0/5 No Monitored Full
Presumptive Class A1 – No Data
Class BWW2 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall:
Class BWW2- Continuous DO Monitoring: