Group camping, picnic sites to reopen at Oregon state parks this spring Updated 10:31 AM; Today 10:31 AM The group picnic shelter at Coffenbury Lake at Fort Stevens State Park on the north Oregon coast.Terry Richard/The Oregonian Facebook Share Families and friends will be allowed to gather at group camping and picnic sites at Oregon state parks this spring, though certain limitations will be in place. The Oregon Parks and Recreation Department announced Tuesday that reservable group facilities at some state parks will reopen May 1, with online reservations available starting April 15. Most camping areas designed for people biking or hiking into state park campgrounds will also reopen May 1, with some reopening June 1. Those sites will remain first-come, first-served, the parks department said.