The U.S. Army Corps of Engineers is relaxing restrictions at some day-use recreation sites Thursday as the first phase in a gradual relaxing of closures at Corps locations.  Sites relaxing restrictions in the region include Fort Cascades, Hamilton Island, North Shore Recreation Area, and Tanner Creek Recreation Area at Bonneville Lock and Dam, Avery Park, Hess Park, and Spearfish Park at The Dalles Dam, and Cliffs Park, Giles French Park, Railroad Island Park, Rock Creek Park, Roosevelt Park, Sundale Park, and Threemile Canyon Park at John Day Dam.  The sites listed above are only open for day-use, with camping and overnight use not permitted at this time.  All visitor centers, playgrounds and group picnic sites remain closed.  Visitors must comply with all park and vehicle rules and recreate responsibly by following safety guidelines to lessen the spread of COVID-19.  In addition, boat ramps at Celilo Park, Lepage Park, and Plymouth Park are open while those parks remain closed.