Montgomery Creek IA 03-SSK-6508
from mouth (SE1/4 NE1/4 S35 T85N R25W Boone Co.) to headwaters (NW1/4 S22 ST85N R26W Boone 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 8:13:38 AM
- Updated
- 2/1/2024 9:05:44 AM
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 “fully 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 2008-2012 908020 Montgomery Creek Site SC-11 Iowa DNR 6 BIO See Below 873 Montgomery Creek Gilbert Site ID Data Source ID # Samples / # Years 2008-2012 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level 908020 6 10 / 5 465 Yes 7 70% Yes Evaluated Not BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal BM Sample Gear BMIBI score BMIBI Class 47b BMIBI BIT BMIBI Pass/Fail 873 8/9/13 16 47b MS/WW Hess 66 Good 62 Pass BioNet Site ID Date Drainage Area (mi2) Ecoregion Major Drainage/Thermal Riffle Stream? FIBI score FIBI Class 47b FIBI BIT FIBI Pass/Fail 873 8/9/13 16 47b MS/WW Yes 50 Fair 53 Pass* Community Assessment Type Assessment Result Support Level IR Category Reason Benthic Macroinvertebrates Evaluated Pass (1/1) Full *FIBI score passed
when 7 pt. UAV was applied to the single sample. Fish Evaluated Pass (1/1) Full Assessment was evaluated because the drainage area of Overall Evaluated Pass Full 1 the sample site was smaller than the calibrated range.
Presumptive Class A1 - Indicator Bacteria: 2008-2012
Presumptive Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall: