Lake Name:

a lake.
Contact information
For information on Lakes in Wisconsin, contact:
Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
DNR Contacts for Cedar Lake

Big Cedar Lake P & R District [exit DNR]

Big Cedar Lake Property Owners Association [exit DNR]

Cedar Lakes Conservation Foundation

Find A Lake > Washington County > Cedar Lake

Cedar Lake
Washington County, 937 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 43 (Mesotrophic) and was determined using chlorophyll data. For a Two-Story lake, this is considered Good.

Cedar Lake was monitored by volunteers between 1986 and 2018. 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. Cedar Lake is also part of DNR's long term trend monitoring project. 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 Cedar Lake10014829Map2020Details
Big Cedar Lake - Deep Hole - South Basin673206Map2021Details
Big Cedar Lake Northern Basin Deep Site10041160Map2010Details
Big Cedar Lake at North Basin673226Map2020Details