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Fish Lake

Fish Lake
Photo by Diane Glodoski

Contact information
For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
DNR Contacts for Fish Lake

Crystal, Fish, Mud Lake District [exit DNR]

Fish Lake Association [exit DNR]

Find A Lake > Dane County > Fish Lake

Fish Lake
Dane County, 199 Acres


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 56 (Eutrophic) and was determined using satellite water clarity observations data. For a Two-Story lake, this is considered Poor.

Fish Lake was monitored by volunteers between 1987 and 2007. Volunteers monitor water clarity with a black and white Secchi disk. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. Fish Lake is also part of DNR's long term trend monitoring project. Additional monitoring has been done through projects funded in part by DNR Lake 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
Fish Lake - Deep Hole-Littoral Zone133120Map2015Details
Fish Lake - North side10044695Map2015Details
Fish Lake - SE corner10044694Map2015Details
Fish Lake at Culvert 10031438Map2010Details
Fish Lake at Culvert Fish Lake Rd10031440Map2010Details