Clear Creek IA 01-UIA-249
mouth (S35 T100N R5W Allamakee Co.) to north line of S15 T100N R5W Allamakee Co.
The presumptive Class A1 use and the Class A2 use both were assessed as “not supported” due to levels of indicator bacteria that exceeded state water quality criteria. The Class BCW1 use was assessed as “fully supported” based on the updated trout reproduction 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 Iowa DNR 6 WQ CY 2012-2014 190050006 Clear Creek - Site 28 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 190050006 6 21/3 1498 4774 585 Yes 17 81% Yes Evaluated Not 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 190050006 6 21/3 1498 4774 585 Yes 7 33% Yes Evaluated Not Class HH - No Data
Aquatic Life Use - Trout Natural Reproduction
Based on the latest trout reproduction in Iowa streams summary prepared by the DNR Fisheries Bureau, the aquatic life use was assessed as "fully supported." According to the summary, a portion, or all, of this assessment unit 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: Historical
Class A2 - Indicator Bacteria: Historical