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For information on Lakes in Wisconsin, contact:
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DNR Contacts for Lac La Belle

Lac La Belle Management District [exit DNR]

Find A Lake > Waukesha County > Lac La Belle

Lac La Belle
Waukesha County, 1154 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 48 (Mesotrophic) and was determined using chlorophyll data. For a Two-Story lake, this is considered Fair.

Lac La Belle has been monitored by volunteers since 1986. 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. Lac La Belle 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. 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
Lac La Belle - Deep Hole-Site 1683125Map2020Details
Lac La Belle - Lake Lac La Belle132Map1976Details
Lac La Belle - Nw Basin-Site 2683171Map2020Details
Lac La Belle - SE Basin Deep Hole - Site 3683390Map2019Details
Lac La Belle at Oconomowoc WI10039836Map2003Details
Lac LaBelle Central Basin10041748Map1992Details