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

Long Lake Property Owners Association [exit DNR]

Find A Lake > Shawano County > Long Lake

Long Lake
Shawano County, 87 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 54 (Eutrophic) and was determined using chlorophyll 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.

Long Lake has been monitored by volunteers since 1990. Volunteers monitor water clarity with a black and white Secchi disk. Some also collect water samples, which are sent to the State Lab of Hygiene to be analyzed. Volunteers are the source of the majority of Wisconsin's lake water quality data, and their dedication is greatly appreciated. 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
Long Lake - Grass Lake Road 10041946Map2014Details
Long Lake - Deep Hole593003Map2021Details
Long Lake North Herbicide Concentration Monitoirng10054188Map2021Details
Long Lake South Herbicide Concentration Monitoring10054191Map2021Details
Long outside North curtain10055179Map2021Details
Long outside south curtain10055180Map2021Details