Long Dick Creek IA 03-SSK-2007
N. line of S34 (SE1/4) T86N R23W Hamilton Co to headwaters in NE1/4 S8 T87N R23W 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
- 1/3/2022 10:55:16 AM
- Updated
- 1/14/2022 3:08:17 PM
The presumptive Class A1 use was assessed as "not supported" due to levels of indicator bacteria (E. coli) that exceeded state water quality criteria. The presumptive Class BWW1 use was assessed as “not supported” based on multiple fish kill investigations and on biological sampling data.
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 WQ CY 2008 – 2009 11400004 Long Dick Creek near
Ellsworth Site ldc-2 Iowa DNR 6 BIO See Below 691 Long Dick Creek Ellsworth – LDC2 Site ID Data Source ID # Samples / # Years 2008 Geometric Mean 2009 Geometric Mean Annual Geometric Mean
Violation # Violations % Violations Significantly >10%
Violations Assessment Type Support Level 11400004 6 26 / 2 369 175 Yes 15 58% Yes Evaluated Not 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 691 10/6/08 16 47b MS Art Sub 71 Good 62 Pass BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/Fail 691 10/6/08 16 47b MS Yes 24 Poor 53 Fail Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Evaluated Pass (1/1) Full Fish Evaluated Fail (0/1) Not Assessment was evaluated because the
drainage area of the Overall Evaluated Fail WINOFI 3bu site was smaller than the calibrated range. Presumptive Class BWW1 – Fish kill Assessment: The presumptive Class BWW1 aquatic life use assessment based on the 2004 and 2011 fish kills resulted in two Category 5b impairments because there were two distinct causes. The fish kills were caused by a “pollutant” or were suspected to be caused by a “pollutant”; therefore, the presumptive Class BWW1 use was considered impaired. Because the sources of the pollutants were not identified and/or the enforcement actions taken against the responsible party have not been resolved, the presumptive Class BWW1 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. More details about the 2011 fish kill can be found here: https://programs.iowadnr.gov/fishkill/Events/834 More details about the 2004 fish kill can be found here: https://programs.iowadnr.gov/fishkill/Events/599
Presumptive Class A1 - Indicator Bacteria: Historical
Presumptive Class BWW1 - Biological Sampling:
Fish:
Overall: