(Portland, OR) -- Visitors to Multnomah Falls will need timed parking permits after May 23rd. The permits are used every year to limit the number of vehicles trying to park at the falls. The permits are needed between 9 a.m. and 6 p.m.. They cost two dollars and can be purchased at recreation dot gov. You can buy permits up to two weeks before your visit. The permit does not guarantee parking will be available. You can also park at the Gateway Transit Center and take a shuttle bus.