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Fourth Lake
Fourth Lake was monitored by volunteers between 2005 and 2016. Volunteers monitor water clarity with a black and white Secchi disk. 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 Name | Station ID | Map | Max Year | Reports |
|---|
| Fourth Lake - Deep Hole | 443099 | Map | 2023 | Details |
| Fourth Lake-Moen Chain - Center 15 Ft Dp | 443388 | Map | 1992 | Details |