Bond Lake

Bond Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Douglas County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI value of 18 puts Bond Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. At 67 ft of maximum depth, Bond Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake's 279 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Within Douglas County's 40 graded waters, Bond Lake sits at rank 9, near the top of the local distribution.

No invasive species are currently listed at Bond Lake — the lake remains off the Wisconsin infested-waters roster. Walleye are documented at Bond Lake, one of 5 fish species on record for the lake. Public access is available — the lake is on the Wisconsin DNR public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.