Nestled in the sagebrush rangelands to the west of Silver Lake’s dry lake bed, Duncan Reservoir is a great place for picnicking, canoeing, camping, and fishing for stocked rainbow trout. The campground consists of four single campsites on the west side of Duncan Reservoir, and a group campsite on the north end of the reservoir, below the dam. Additional facilities at Duncan Reservoir include a boat ramp, vault toilet, covered picnic area, and several picnic tables and fire grates. During the winter months, ice fishing is possible if the reservoir freezes over. Know Before You Go Open year-round. The 5-mile Portion of County Road 4-14 is gravel and sometimes rough. Be aware of livestock grazing on the open range, especially near OR 31. 4 Individual Campsites, 1 Group Site; first come, first serve. Vault Restroom. No Drinking Water available. No Food or Gas at Duncan Reservoir. The Nearest Services are in the nearby towns of Silver Lake, Fort Rock, and Summer Lake, Oregon. Point of Interest County Road 4-14 winds through open range, revealing occasional glimpses of Silver Lake, Table Rock, Picture Rock Pass the occasional herd of pronghorn antelope.