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Find A Lake > Winnebago County > Lake Poygan

Lake Poygan
Winnebago, Waushara County, 14024 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 60 (Eutrophic) and was determined using satellite water clarity observations data. For a Shallow Lowland lake, this is considered Good. Shallow Lowland lakes do not stratify, or form separate layers of water, during the summer months and have watersheds greater than 4 square miles in area.

Lake Poygan was monitored by volunteers between 1991 and 2014. 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. 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 NameStation IDMapMax YearReports
Lake Poygan - D7713393Map2005Details
Lake Poygan - E2713394Map2007Details
Lake Poygan - E3713395Map2007Details
Lake Poygan - E5713397Map2006Details
Lake Poygan - E7713399Map2005Details
Lake Poygan - East (P03)713279Map2015Details
Lake Poygan - F2713400Map2014Details
Lake Poygan - F3713401Map2014Details
Lake Poygan - F6a713430Map2007Details
Lake Poygan - Site 1713307Map2001Details
Lake Poygan - West (P01)713277Map2015Details
Lake Poygan Norwegian Bay104502Map2015Details
Lake Poygan Optical Characterization 110050077Map2018Details
Lake Poygan Optical Characterization 210050078Map2018Details
Lake Poygon - Lake Poygon133Map1976Details
Poygan Lake - Deep Spot713121Map2007Details
Poygan Lake - Poygan Lake714002Map1979Details