Washington Lake South Boat Ramp is a large state-owned access point on Lake Washington's south shore near Dassel, featuring a double concrete ramp suitable for fishing boats, pontoons, and kayaks.

The ramp provides convenient access to this 2,438-acre shallow lake popular for walleye and bass fishing, though users should be aware of invasive species (Eurasian watermilfoil and zebra mussels) and follow decontamination protocols at the launch.