Lake Brooks Seaplane Base (IATA: BKF, FAA LID: 5Z9) is a public-use seaplane base located near Brooks Camp in Katmai National Park, in the Lake and Peninsula Borough of the U.S. state of Alaska. It is owned by the U.S. Department of the Interior. As per Federal Aviation Administration records, this airport had 4,295 passenger boardings (enplanements) in calendar year 2007, an increase of 86% from the 2,304 enplanements in 2006.