Wapogasset Lake

Wapogasset Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. High phosphorus is the leading drag on the score — likely from upland agriculture, lawn runoff, or in-lake sediment release.

The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. Wapogasset Lake reaches 32 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. With 1,189 acres of surface and partial shoreline records, Wapogasset Lake is a large water by Wisconsin standards — recreational pressure is spread across a long shoreline. Wapogasset Lake sits at rank 51 of 77 in Polk County, in the lower half of the local distribution.

Zebra mussel presence at Wapogasset Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery includes walleye alongside the lake's other 5 documented species — a notable draw for Wisconsin anglers. A documented public access point at Wapogasset Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.