Wakesurfing on Cass Lake Allens Bay

Cass Lake Allens Bay rates Excellent for wakesurf suitability. Deep and roomy enough to ride the way the sport’s own guidance recommends. The rating is based on its measured maximum depth of 120 ft and surface area of 15,958 acres. This is a read of the water's dimensions, not legal permission — check the Minnesota rules and the local authority for this lake before you launch.

Cass Lake Allens Bay reaches about 120 ft at its deepest point. Wake-boat research from the University of Minnesota St. Anthony Falls Laboratory finds that an enhanced wake needs deep water to dissipate rather than reflect off the bottom, which is why depth is one of the two factors in the suitability rating.

Cass Lake Allens Bay carries a LakeQuality water-quality grade of A, computed from EPA and state monitoring data — Secchi clarity, total phosphorus, and chlorophyll-a. That is a separate question from wakesurf suitability: a lake can be excellent to ride and mediocre to swim in, or the reverse. See the full lake page for the grade breakdown.

Minnesota has no statewide wakesurfing distance/depth rule. The DNR recommends (not requires) staying 200+ feet from shore, and the state mandates boater education that covers minimizing wake impacts. A proposed DNR rule (500-foot setback, 20-foot depth, 50-acre wakesports zone) and targeted bills (e.g., SF 95 for a Mississippi River pool) remain unenacted. Substantive limits are set by local surface-water-use ordinances (e.g., Caribou Lake: 500 feet from shore and 20 feet deep). Individual lakes often add stricter local limits on top of the statewide rule — no-wake zones, operating hours, and horsepower caps are all common — so confirm with the local authority for Cass Lake Allens Bay.