Canoe Creek IA 01-UIA-260
mouth (S25 T99N R7W Winneshiek Co.) to county road W38 (S23 T99N R8W Winneshiek Co.).
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 Class BWW1 use was assessed as “fully supported” based on biological sampling data, water quality monitoring data, and on the trout reproduction in Iowa streams summary prepared by the DNR Fisheries Bureau. All other designated uses were "not assessed."
Data Sources: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description NEIARCD 19 WQ CY 2012-2014 191910013 Canoe Creek Site 20 Iowa DNR 6 BIO See Below 107 Canoe Creek Canoe Creek SWMA -
Decorah Site ID Data Source ID # Samples / # Years 2012 Geometric Mean 2013 Geometric Mean 2014 Geometric Mean Annual Geometric Mean Violation # Violations % Violations Significantly >10% Violations Assessment Type Support Level 191910013 19 21 / 3 346 207 389 Yes 13 62% Yes Evaluated Not Site ID Data Source ID # Samples / # Years Maximum Value Mean Value Median Value # Violations % Violations Significantly >10% Violations Assessment Type Support Level 191910013 19 14 / 3 8.33 8.18 8.24 0 0% No Evaluated Full Site ID Data Source ID Parameter Name # Samples / # Years Maximum Value Mean Value Median Value # Acute / Chronic Violations % Acute/ Chronic Violations Significantly >10% Violations Assessment Type Support Level 191910013 19 Ammonia 14 / 3 0.06 0.05 0.05 0 / 0 0% / 0% No Evaluated Full 191910013 19 pH 14 / 3 8.33 8.18 8.24 0 / NA 0% / NA No Evaluated Full 191910013 19 Temperature 14 / 3 20 14.8 15 0 / 0 0% / 0% No Evaluated Full Site ID Date Drainage Area (mi2) Ecoregion Major Drainage BM Sample Gear BMIBI score BMIBI Class 52b BMIBI BIT BMIBI Pass/Fail 107 9/7/22 66.6 52b MS Hess 76 Excellent 61 Pass 107 7/27/21 66.6 52b MS Hess 62 Good 61 Pass 107 8/18/20 66.6 52b MS Hess 85 Excellent 61 Pass 107 8/6/19 66.6 52b MS Hess 59 Good 61 Fail 107 8/31/18 66.6 52b MS Hess 78 Excellent 61 Pass Site ID Date Drainage Area (mi2) Ecoregion Major Drainage Riffle Stream? FIBI score FIBI Class 52b FIBI BIT FIBI Pass/Fail 107 9/7/22 66.6 52b MS NA 91 Excellent 52 Pass 107 7/27/21 66.6 52b MS NA 82 Excellent 52 Pass 107 8/18/20 66.6 52b MS NA 86 Excellent 52 Pass 107 8/6/19 66.6 52b MS NA 87 Excellent 52 Pass 107 8/31/18 66.6 52b MS NA 79 Excellent 52 Pass Community Assessment Type Assessment Result Support Level IR Category Reason Benthic
Macroinvertebrates Monitored Pass (4/5) Full Fish Monitored Pass (5/5) Full 1 Assessment was monitored because the
assessment used multiple Overall Monitored Pass Full samples collected in a recent five-year
period to complete the assessment. Even though Canoe
Creek is classified as a BWW1 stream, based on the January 2024 trout
reproduction in Iowa streams summary prepared by the DNR Fisheries Bureau, the
Class BWW1 use of Canoe Creek was assessed as "fully supported."
According to the updated summary, this stream was placed in Category I: streams that exhibit consistent natural reproduction and maintain a wild population of one or more trout species without any stocking.
Presumptive Class A1 – Indicator Bacteria: 2012-2014
Presumptive Class A1- pH: 2012-2014
Class BWW1 - Binomial Parameters: 2012-2014
Class BWW1 - Biological Sampling:
Benthic Macroinvertebrates:
Fish:
Overall:
Class BWW1 - Trout Natural Reproduction:
Class HH - No Data