Mirror Lake

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 58 (Eutrophic) and was determined using chlorophyll data. For a Impounded Flowing Water lake, this is considered Good.

Mirror Lake has been monitored by volunteers since 1987. 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 Lake Grants and 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 Name	Station ID	Map	Max Year	Reports
Mirror Lake - Deep Hole	573036	Map	2007	Details
Mirror Lake - Site 1 South Basin Near Boat Landing	573079	Map	2024	Details
Mirror Lake - Site 2 North Basin	573080	Map	2013	Details
Mirror Lake - Site 3 West - Deep Hole	573056	Map	2018	Details