Catfish Creek IA 01-TRK-125
from S. Fk. Catfish Cr. (S2 T88N R2E Dubuque Co.) to south line of S9 T88N R2E Dubuque Co.
- Cycle
- 2022
- Release Status
- Final
- Overall IR
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 1/10/2022 6:52:47 AM
- Updated
- 1/10/2022 6:57:08 AM
The presumptive Class A1 use remains assessed as “not supported” due to violations of Iowa water quality criteria for indicator bacteria (E. coli). The Class BWW2 use remains assessed as "not supported" due to a fish kill investigation.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description CCWP 18 WQ CY 2010 WQ-05 Catfish Creek WQ-05 CCWP 18 WQ CY 2010 WQ-13 Catfish Creek WQ-13 Site ID Data Source ID # Samples / # Years 2010 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level WQ-05 18 11 / 1 4795 Yes 6 55% Yes Evaluated Not WQ-13 18 10 / 1 1188 Yes 4 40% Yes Evaluated Not Class BWW2 - Fish kill Assessment: The Class BWW2 aquatic life use assessment based on the 2014 fish kill placed this segment in Category 5b. The fish kill was caused by a “pollutant” or was suspected to be caused by a “pollutant”; therefore, the Class BWW2 use was considered impaired. Because the source of the pollutant was not identified and/or the enforcement actions taken against the responsible party have not been resolved, the Class BWW2 use was placed in Category 5b. Due to uncertainty regarding the recovery of the aquatic life following the fish kill, any existing fish kill 5b impairment will remain in Category 5b until more recent sampling has shown recovery of the aquatic community or the responsible party has paid restitution. Details about the 2014 fish kill can be found here: https://programs.iowadnr.gov/fishkill/Events/879
Presumptive Class A1 - Indicator Bacteria: 2010