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

Crystal Lake Advancement Association [exit DNR]

Sanitary District #1 Towns Of Rhine And Plymouth [exit DNR]

Find A Lake > Sheboygan County > Crystal Lake

Crystal Lake
Sheboygan County, 129 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 41 (Mesotrophic) and was determined using satellite water clarity observations data. For a Two-Story lake, this is considered Excellent.

Crystal Lake was monitored by volunteers between 1986 and 2013. 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. Crystal 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
Crystal Lake - Deep Hole603120Map2018Details