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

Cranberry Lake Association, Inc [exit DNR]

Eagle River Chain Lakes Association [exit DNR]

Find A Lake > Vilas County > Cranberry Lake

Cranberry Lake
Vilas, Oneida County, 924 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 56 (Eutrophic) and was determined using chlorophyll 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.

Cranberry Lake has been monitored by volunteers since 1992. 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. 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
Cranberry Lake - Deep Hole643056Map1979Details
Cranberry Lake - Deep Hole643177Map2020Details
Cranberry Lake - E Bay (Herbicide Monitoring Site 4)10043498Map2015Details
Cranberry Lake - E Bay middle (Herbicide Monitoring Site 2)10043496Map2015Details
Cranberry Lake - E Bay middle (Herbicide Monitoring Site 3)10043497Map2015Details
Cranberry Lake - E Bay near Eagle R (Herbicide Monitoring Site 1)10043495Map2015Details
Cranberry Lake East Bay Littoral Zone (H 08#1)10028800Map2008Details
Cranberry Lake East Bay Littoral Zone (H 08#2)10028801Map2008Details
Cranberry Lake East Bay Littoral Zone (H 08#3)10028802Map2008Details
Cranberry Lake East Bay Littoral Zone (H 08#4)10028803Map2008Details
Cranberry Lake East Bay Littoral Zone (H 08#5)10028804Map2008Details
Cranberry Lake North Of Island (Mid)10028806Map2008Details
Cranberry Lake South Littoral Zone (F 08 Ta)10028805Map2008Details