Through the end of 1998, visitors may make Yosemite campground reservations up to three months in advance, either by telephone or by mail. From May through September, campsites are in heavy demand, and prospective campers are encouraged to call the reservation number as early as possible.
Campsite assignments are final.
Campers may not switch or change campsites after they arrive in the park. Maximum length for recreational vehicles in Valley campgrounds is 40 feet. The valley group campground was destroyed in the January 1997 flood. During periods of peak visitation, all group campsites may be booked early. Maximum length for recreational vehicles is 35 feet.