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DNR Contacts for Big Roche a Cri

Big Roche-A-Cri Lake P & R District [exit DNR]

Find A Lake > Adams County > Big Roche a Cri

Big Roche a Cri


Water Quality

One measure of a lakes health is the trophic state, which relates to the amount of algae in the water. The average summer trophic state for the last 5 years was 47 (Mesotrophic) and was determined using chlorophyll data. For a Reservoir lake, this is considered Excellent.

Big Roche a Cri has been monitored by volunteers since 1989. Volunteers monitor water clarity with a black and white Secchi disk. Some also collect water samples, which are sent to the State Lab of Hygiene to be analyzed. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. Additional monitoring has been done through projects funded in part by DNR Aquatic Invasive Species Grants. Reports and graphs featuring data collected by volunteers, DNR staff and others can be viewed below.

Water Quality Reports and Graphs

Station NameStation IDMapMax YearReports
Big Roche A Cri Lake - E End10033656Map2012Details
Big Roche A Cri Lake - Site 1 - West End - Deep Hole013007Map2024Details
Big Roche A Cri Lake - Site 2 - Lake Center013052Map2022Details