The Senior Pass is available to U.S. citizens or permanent residents age 62 or over. There is a one time administrative processing fee of $10.
A free Military Pass is available to U.S. military members and dependents in the Army, Navy, Air Force, Marines and Coast Guard, as well as Reserve and National Guard members. A Common Access Card (CAC) or Military ID (Form 1173) is required.
A free Access Pass is available to U.S. Citizens or permanent residents with permanent disabilities.
The Annual Interagency Pass ($80) is not available at the park visitor center. It can be obtained at a federal recreation site that charges an admission fee, by calling 1-888-275-8747, or by visiting the USGS Store online.