Fox River IA 04-FOX-995
from unnamed tributary (NW 1/4 S6 T68N R12W Davis Co.) to confluence with unnamed tributary in S29 T69N R15W Davis Co.
- Cycle
- 2026
- Current Phase
- Public Comment
- Overall IR
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Stable
- Created
- 10/27/2025 3:09:12 PM
- Updated
- 1/13/2026 8:52:30 AM
The presumptive Class A1 use was assessed as “not supported” due to 2009 levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The Class BWW2 use was assessed as "not supported" based on biological sampling data.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 BIO See Below 300 Fox River Bloomfield (REMAP
#48) USGS 11 WQ CY 2009 5494200 Fox River near West
Grove, IA USGS 11 WQ CY 2009 5494250 Fox River near
Paris, IA USGS 11 WQ CY 2009 5494300 Fox River at
Bloomfield, IA USGS 11 WQ CY 2009 5494350 Fox River at Co HWY
J40 near Bloomfield, IA Site ID Data Source ID # Samples / # Years 2009 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level 5494200 11 8 / 1 202 Yes 2 25% Unknown (<10 samples) Evaluated Not 5494250 11 8 / 1 214 Yes 1 12% Unknown (<10 samples) Evaluated Not 5494300 11 8 / 1 336 Yes 3 38% Unknown (<10 samples) Evaluated Not 5494350 11 8 / 1 305 Yes 1 12% Unknown (<10 samples) Evaluated Not Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 40a BMIBI BIT BMIBI Pass/Fail 300 7/19/22 101.1 40a MS Art Sub 65 Good 41 Pass 300 7/29/19 101.1 40a MS Art Sub 59 Good 41 Pass Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 40a FIBI BIT FIBI Pass/Fail 300 7/19/22 101.1 40a MS NA 24 Poor 33 Fail 300 7/29/19 101.1 40a MS NA 34 Fair 33 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Monitored Pass (2/2) Full Fish Evaluated Fail (1/2) Not Assessment was evaluated because although
the FIBI assessment used Overall Evaluated Fail Not 5bt multiple samples collected in the last five
years, it was inconclusive. Site ID Data Source ID # Days Monitoring (2017/2019) DO Criteria Type # 2017 violations / Violations
needed for impairment # 2019 violations / Violations
needed for impairment Violates Annual Significantly >10% Rule? Assessment Type Support Level 24 hr 2/4 0/4 No 300 6 16/15 16 hr 1/4 0/4 No Monitored Full
Presumptive Class A1 – 2009 E. coli data:
Class BWW2 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall:
Class BWW2- Continuous DO Monitoring: