Sunnyside Park Boat Ramp is a popular access point at the head of Foster Reservoir offering a single improved boat ramp with moorage facilities for day-use boaters.

The park features 130+ campsites with electrical and water hookups, showers, picnic shelters, a playground, volleyball court, and dump station, with the campground open April through November and day-use facilities available year-round. Located 1.

5 miles up Quartzville Creek Road from Highway 20, it serves as a primary launching point for boating and fishing on Foster Lake.