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Long 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 57 (Eutrophic) and was determined using Secchi 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.
Monitoring has been done through projects funded in part by DNR Lake Grants. Reports and graphs featuring data collected by volunteers, DNR staff and others can be viewed below.
Water Quality Reports and Graphs
Station Name | Station ID | Map | Max Year | Reports |
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Long Lake - Deep Hole | 573057 | Map | 2025 | Details |
Long Lake - near Laudon Park Road | 10029027 | Map | 2021 | Details |