Winter Camping Due to limited amenities and special requirements during the winter, all reservations must be made by phone. 888-562-4502. Office hours are 10am - 5pm M-Sat and 12pm - 5pm Sunday, weather permitting. From Nov. 1 to March 31 there is limited access to water at sites. If you need a water connection you must call and make a reservation and have a heated water hose, or you may fill your holding tanks from a hydrant at the store. Office closed Thanksgiving, Christmas Eve, Christmas, and New Year's. Park subject to close due to weather.