Go if
Hikers eyeing the Crags Trail or anglers working Castle Creek will get the most out of this spot. Showers and flush toilets keep it comfortable, and Dunsmuir is only 6 miles out when you need resupply.
Select a month, then check for open campsites
Price
$35 - $50/night
Booking
Reservable
Sites
76 campsites
Season
Year-round
Cell
Unknown
Pets
Very Pet Friendly
Select a month, then check for open campsites
Price
$35 - $50/night
Booking
Reservable
Sites
76 campsites
Season
Year-round
Cell
Unknown
Pets
Very Pet Friendly
We'll monitor this campground and alert you the moment sites become available.
Free to start · paid plans add 2-min scans
256,000+ sites monitored · Email alerts to start; SMS and in-app with an account
Learn more about alerts →Flume Environmental Campground
20022 Castle Creek Road, Castella, CA 96017, USA
Hikers eyeing the Crags Trail or anglers working Castle Creek will get the most out of this spot. Showers and flush toilets keep it comfortable, and Dunsmuir is only 6 miles out when you need resupply.
No hookups and no RV sites make this tent-only by design. Poor cell reception is consistent throughout the park, and summer weekends pack the loops hard enough that missing a reservation means no site.
Context for the broader area surrounding Flume Environmental Campground, sourced from the federal Recreation.gov rec-area record. View official page →
This isolated, spectacular mountain valley is a narrow canyon with a good dirt road that often provides exceptional opportunities to view bighorn sheep and other wildlife.
Southern access via the Dell exit on I-15, 24 miles north of the Montana-Idaho border. Northern terminus is Montana Route 324 west of Clark Canyon Dam.
Compare with similar sites, watch availability, and build a packing list — Camp Sage handles all of it.
Summer brings daytime highs in the mid-70s to 90s with cool nights in the 40s-50s. This is peak season for swimming, fishing, and high-elevation hiking, though afternoon thunderstorms can develop. Winter temperatures drop to the low 20s with occasional snow. Spring offers comfortable hiking weather. Weekends and holidays see the heaviest crowds in summer. Bring layered clothing for temperature swings.
Peak season mid-May–Sept; warm days, river swimming and hiking popular though storms possible.
Reservation tips, booking windows, and free cancellation alerts.
Flume Environmental Campground is located within Castle Crags State Park, offering environmental camping opportunities that emphasize minimal impact on the environment. The campground features basic amenities to accommodate campers in the natural setting of the park.
Researching this campground? Ask anything — other campers and our team will weigh in. No visit required.
Short heads-ups about the road in, gear quirks, timing, and more. You don't have to have been here to share what you know.
Rate Flume Environmental Campground
Been here? Tap a star to start. Takes about a minute.
Sign-in required only if you want your name on it.
Be the first to review this campground
Every adventure creates another. Share what you learned so the next camper feels a little more prepared heading out.