Sapokesick Lake

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 42 (Mesotrophic) and was determined using Secchi data. For a Deep Headwater lake, this is considered Excellent. Deep Headwater lakes stratify, or form separate layers of water, during the summer months and have a watershed area less than 4 square miles.

Sapokesick Lake has been monitored by volunteers since 2002. 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
Legend Lake - Little Blacksmith Channel (Herbicide Monitoring Site BBL)	10043845	Map	2017	Details
Legend Lake - Rainbow Channel Deep Hole	403114	Map	2018	Details
Legend Lake - Sapokesick Basin Deep Hole	403111	Map	2024	Details
Legend Lake - Sapokesick W (Herbicide Monitoring Site Sap1)	10043833	Map	2015	Details
Legend Lake - Sapokesick W Center (Herbicide Monitoring Site Sap2)	10043834	Map	2017	Details
Sapokesick Lake - Honey Tree Bay	10052566	Map	2024	Details
Sapokesick Lake - White Eagle	10052564	Map	2024	Details