From the Lakeside Ranger Station, go south 10.7 miles to McNary, Arizona. Turn left (sign says to Vernon) on FS Road 224/CR 3140. Go 7 miles to Los Burros Campground (sign on right). Turn right.
From the Lakeside Ranger Station, go south 0.2 miles to Porter Mountain Road, and turn left. Go north 1.7 miles, and then turn right on Scotts Reservoir Drive (sign on right says Scotts Resevoir).