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Shell Lake Washburn County (Photo)

Shell Lake Washburn County (Photo)
Photo by Emily Beranek

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

Shell Lake Inland Lake P & R District [exit DNR]

Find A Lake > Washburn County > Shell Lake

Shell Lake
Washburn County, 2513 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 45 (Mesotrophic) and was determined using chlorophyll data. For a Shallow Seepage lake, this is considered Good. Shallow Seepage lakes do not stratify, or form separate layers of water, during the summer months and have no inlet or outlet.

Shell Lake was monitored by volunteers between 1988 and 2020. 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. Shell Lake is also part of DNR's long term trend monitoring project. 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
Shell Lake664043Map1979Details
Shell Lake - Deep Hole663010Map2022Details
Shell Lake Northeast Site10041526Map2009Details
Shell Lake Northwest Site 110041524Map2009Details
Shell Lake Northwest Site 210041525Map2009Details
Shell Lake Southcentral Site10041528Map2009Details
Shell Lake Southeast Site10041527Map2009Details
Shell Lake Southwest Site10041529Map2009Details