Lake Name:

a lake.
View of a lake from a pier
Contact information
For information on Lakes in Wisconsin, contact:
DNR Lake
Division of Water
Bureau of Water Quality
Wisconsin Lakes Contacts

Water Quality

Volunteers, DNR staff, county staff and others collect water clarity, temperature and dissolved oxygen, as well as other water quality data, on lakes across Wisconsin. Around 1,000 volunteers are currently active, and the network has been going strong since 1986. Water clarity is measured with a black and white disk called a "Secchi Disk".

Satellite images are used to retrieve water clarity data for lakes across the state. This effort began in 1999 when the University of Wisconsin-Madison Environmental Remote Sensing Center (ERSC) developed a model for the retrieval of water clarity data from satellite images and Citizen Lake Monitoring Network volunteers provided on-the-ground Secchi data to calibrate this model for each satellite image. Water clarity data was retrieved for over 8,000 lakes statewide between 1999 and 2001. The DNR continues to analyze data in this way today in its remote sensing program.

Graphs & Data