On Tuesday, Feb. 1, the National Park Service began accepting applications for noncommercial river trip permits to raft the Colorado River through the Grand Canyon.

According to a press release from the National Park Service, the permits are for specific launch dates within calendar year 2023. A total of 359 permits will be available for river trips between 12-25 days. Eligible individuals may apply online at the weighted lottery website. Applications will be accepted online through Feb. 22 at 12 p.m. MST.

In addition to the annual main lottery, follow-up lotteries are held as needed throughout the remainder of the year to reassign canceled and/or left-over river trips. Public notifications for these follow-up lotteries are made through email, an RSS feed and Twitter.

Individuals must be 18 years or older to apply