Pettit Lake Boat Ramp provides access to a 400. 5-acre alpine lake in the Sawtooth Mountains with a sand boat ramp located approximately half a mile from the campground.

The day-use area offers vault toilets, picnic tables, and potable water, with a $6 daily fee; note that personal watercraft are prohibited on the lake.

Motorized boating is permitted, making it suitable for fishing and recreational paddling in this scenic mountain setting.