Tamarack Bay Lake

On the LakeGrade rubric, Tamarack Bay Lake pulls an A: clarity at 11.5 ft and phosphorus readings still being added put it in the top bracket for Minnesota. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI near 43 places Tamarack Bay Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. At 70 ft of maximum depth, Tamarack Bay Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. With 56,471 acres of surface and 69.8 miles of shoreline, Tamarack Bay Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Within Cass County's 133 graded lakes, Tamarack Bay Lake ranks 83 — below the local median, though not at the bottom.

Tamarack Bay Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. Tamarack Bay Lake's fishery is anchored by muskellunge, with 20 documented species in total — a destination water for muskie anglers. A documented public access point at Tamarack Bay Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been logged at Tamarack Bay Lake more than two dozen times, putting the median around Apr 27 — a useful baseline for tracking climate trends. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.