Never miss your window
Open Canyon watches river flow, campsite openings, and permit cancellations across the West — and alerts you the moment your window opens.
Permit-required rivers are the hardest to time. We watch Recreation.gov so you don't have to.
Pick your terrain
One engine, every Recreation.gov window
We monitor river flow, campground openings, and permit draws. Start with what you're planning.
Rivers
Flow forecasts, gauge readings, and permit-cancellation alerts for permit-required whitewater across the West.
Browse riversCampgrounds
Sold-out campground? We watch Recreation.gov for cancellations and tell you the moment a site opens.
Browse campgroundsTrails
Permit-draw timing and cancellation alerts for high-demand day-hike and overnight trailheads.
Browse trailsWilderness
Backcountry permit alerts for wilderness zones and cross-country travel areas inside national parks.
Browse wilderness areasGet real-time alerts when conditions are right for your next adventure. Watch for available dates, water levels, or other details to help you plan your trip.
What We Do
Monitor Conditions. Catch Cancellations.
Know when your river is running right
We track USGS gauge data for 40+ permit-required rivers across the West. Set a flow range and we'll alert you when it's hit.
Catch cancellations before anyone else
Recreation.gov cancellations move fast. Set an alert and we check every 60 seconds, then tell you the moment a date opens on the Middle Fork, Selway, Gates of Lodore and more.
One place to watch, decide, and go
Browse permit windows, check current flows, and monitor your target rivers — all in one place without juggling tabs.
Simple Monitoring, Alerts When You Need Them
From monitoring to adventure in three simple steps
Choose your rivers
Tell us which rivers you want to watch. We cover 40+ permit-required whitewater runs across the West.
We monitor conditions
Our system tracks river flows, weather forecasts, and permit availability around the clock.
Get alerted when your dates open up
When your river hits your target flow window or a permit cancellation appears, we'll email you right away so you can move fast.
Real-time alerts, right to your phone
When conditions are perfect, you will know immediately. Our alerts include everything you need to make a quick decision and start planning your trip.
Open Canyon Alert
Ruby Horsethief looks perfect this Saturday
Tap to turn this into a trip plan →
Featured Rivers
Bucket-list runs. Real-time conditions.
Monitor flow, permits, and alerts for the most coveted river corridors in the West.
Grand Canyon - Lee's Ferry to Diamond Creek
Middle Fork Salmon River
Selway River
Hells Canyon on the Snake River
Cataract Canyon
Desolation and Gray Canyons
Main Salmon River
Salt River Canyon
Permit Availability Alerts
Selway permit just opened.
You have minutes.
Recreation.gov releases Selway River launch permits for the May 15–July 31 control season via a permit draw — and cancellations appear without warning. Set an alert and Open Canyon checks for openings every 60 seconds, then alerts you the moment one appears.
Most cancellations are claimed in under 10 minutes. Your crew can't afford to find out hours later.
Watch the SelwayOpen Canyon
SMS Alert
Open Canyon: Selway River permit opened for Jun 8 — act fast.
www.opencanyon.io/rivers/idaho
Reply STOP to opt out
Sent 47 seconds after cancellation appeared
Browse Rivers by State
Discover whitewater rivers organized by state. Find local runs, check permits, and monitor conditions for rivers near you.
Popular Whitewater Rivers
Explore detailed conditions, permits, and flow data for 40 top whitewater runs across the Western United States
Ready for your next adventure?
Stop checking the gauge every morning. Set an alert and we'll tell you when your river is running right.
Get Started