Sixmile Creek IA 06-BSR-1533
mouth (S28T94N R48W Sioux Co.) to confluence with unnamed tributary in S19 T95N R46W Sioux 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 8:13:18 AM
- Updated
- 2/2/2024 10:59:18 AM
The presumptive Class A1 use was assessed as "not supported" due to levels of indicator bacteria (E. coli) that violated 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 WQ CY 2002-2003 11840003 Sixmile Creek nr Chatsworth (8) Iowa DNR 6 BIO See Below 175 Sixmile Creek Hawarden – Cleveland Ave Iowa DNR 6 BIO See Below 176 Sixmile Creek Hawarden – Cherry Ave Site ID Data Source ID # Samples / # Years 2002-2003 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level 11840003 6 21 / 2 1212 Yes 16 76% Yes Evaluated Not BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/ Thermal BM Sample Gear BMIBI score BMIBI Class 47a BMIBI BIT BMIBI Pass/ Fail 175 8/3/00 72 47a MO/WW ArtSub 46 Fair 54 Fail 176 8/2/00 94 47a MO/WW ArtSub 58 Good 54 Pass BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/ Thermal Riffle Stream? FIBI score FIBI Class 47a FIBI BIT FIBI Pass/ Fail 175 8/3/00 72 47a MO/WW NA 10 Poor 43 Fail 176 8/2/00 94 47a MO/WW NA 2 Poor 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 it was based on Overall Evaluated Fail Not 5bt samples not collected
in a recent five-year period.
Presumptive Class A1 - Indicator Bacteria: 2002-2003
Class BWW2 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall: