Side Lake Public Water Access Site is a boat ramp located within McCarthy Beach State Park in St. Louis County, offering convenient access to Side Lake and the interconnected Sturgeon Lake chain.

The ramp is situated along the heavily-used campground road and features docks for overnight tie-ups and sandy shoreline access, making it popular with campers exploring the five connected lakes in the area.

Additional amenities at the park include rental watercraft (canoes, kayaks, rowboats), a fishing pier, and campground facilities.