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Lake St. Croix Photo

Lake St. Croix Photo
Photo by WDNR



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

Find A Lake > Saint Croix County > Lake Saint Croix

Lake Saint Croix
Saint Croix, Pierce County, 7696 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 49 (Mesotrophic) and was determined using satellite water clarity observations data. For a Deep Lowland lake, this is considered Good. Deep Lowland lakes stratify, or form separate layers of water, during the summer months and have watersheds greater than 4 square miles in area.

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 St Croix - Mid Channel 1563097Map1998Details
Lake St Croix - Mid Channel 2563098Map1998Details
St. Croix Flowage - St. Croix Flowage564003Map1979Details