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DNR Contacts for Lost Lake

Find A Lake > Florence County > Lost Lake

Lost Lake


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 40 (Oligotrophic) and was determined using chlorophyll data. For a Two-Story lake, this is considered Excellent.

Lost Lake is 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
Lost Lake - Deep Hole193027Map2024Details
Lost Lake - Deepest Part193953Map2023Details