Halfmoon Lake Boat Ramp in Alton is a 20-foot-wide concrete ramp suitable for small to medium-sized boats, canoes, kayaks, and paddleboards, with a maximum boat length of 20 feet.

The town-owned facility features a paved parking area accommodating up to 20 vehicles and trailers, along with restrooms, picnic tables, and trash receptacles.

Note that the ramp has a shallow slope and poor turnaround in the road, and may close during winter months due to ice and snow conditions.