Lees Ferry to the Sea of Cortez (Almost): Grand Canyon River Permit, July Window

This isn't a backpacking permit, it's a boating one, and that changes everything about how you plan. The Colorado River trip through Grand Canyon covers 225 miles from Lees Ferry down through some of the oldest exposed rock in North America, dropping into rapids that don't have equivalents anywhere else in the Lower 48. You're self-contained for the entire run unless you're on a commercial trip, which means gear, food, and water treatment all have to be dialed before you push off. The permit is a NPS lottery system (ZONE type, non-commercial river-runner permit) run through grcariverpermits.nps.gov, not a first-come booking. Cost is $90 per person plus separate Hualapai permit fees, since the lower stretch of the river crosses Hualapai land. That second fee catches people off guard every year — budget for it separately from the NPS charge, and don't assume your NPS permit covers the whole corridor end to end. Launch is at Lees Ferry, mile 0, elevation right around 3,100 feet at the put-in area near the canyon rim access road. From there you're committed — there's no easy bail-out point for a long stretch, which is part of what makes this trip serious even for experienced boaters. Itinerary length and exact launch date come from your lottery slot, so plan food and gear caches around whatever window you draw rather than assuming a standard trip length. July in the canyon means heat, plain and simple. Daytime temps at river level regularly push well past what most people expect from a river trip, and afternoon monsoon storms build fast this time of year. That combination means flash flood risk in side canyons is real and immediate — check drainage conditions before you hike up any tributary, and don't camp in a wash bottom no matter how tempting the shade looks. Main-stem water is silty and needs treatment or settling before you drink it, and side-canyon springs and creeks are seasonal — don't count on a specific one being flowing when you get there. Carry more treatment capacity than you think you need; big groups burn through filter cartridges and pump time fast when everyone's drinking straight from camp. Common mistakes on this trip: underestimating how much sun exposure you get on the water itself (the canyon walls reflect heat back at you), packing food that can't handle multi-day heat without spoiling, and not having a real plan for the Hualapai fee and boundary until they're already on the water. Also — rig for self-rescue. Once you're past the first few rapids, help is a long way off measured in river hours, not trail miles. Camp selection along the corridor is first-come on the water, so groups running the same stretch on the same days sometimes compete for the good beaches. Building slack into your daily mileage plan gives you options if your first-choice camp is taken. — Compiled by the PermitSnag team from agency info, ranger updates, and public trip logs.