Type of Recreation: Day-Use, Boating and Primitive Camping State: Washington County: Whitman Administering Office: Lower Granite Natural Resources Office Location: Lower Granite Lake, Snake River Mile 119, North River Bank. Acreage: 3 Acres Camping and boat launching are free of charge. Open year round with no specific hours of operation. Fire Restrictions: No wood fires June 10 to October 10. Charcoal and propane fires are acceptable. Pets must be kept on a leash. Horses and hunting are prohibited.