Pick a site on the map to see its availability calendar.
Only 8 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
Of the 732 tracked site-nights (Nov 2, 2026 – May 3, 2027): 12 open for online reservation · 720 on sites not offered for online reservation (first-come, first-served or administrative).
Of the open site-nights on mapped sites, 4 fall on weekdays and 8 on weekends (Fri–Sun).
November shows no online availability. 0 of 116 tracked site-nights are open there — 116 on sites not offered online.
| Window | Night | Sites open | Status |
|---|---|---|---|
| Thanksgiving | THU Nov 26 | 0 | None open |
| FRI Nov 27 | 0 | None open | |
| SAT Nov 28 | 0 | None open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
| FRI Jan 1 | 0 | None open | |
| Memorial Day | FRI May 28 | 0 | None open |
| SAT May 29 | 0 | None open | |
| SUN May 30 | 0 | None open | |
| MON May 31 | 0 | None open |
Thanksgiving: no online availability on any tracked night. Christmas: no online availability on any tracked night. New Year: no online availability on any tracked night. Memorial Day: no online availability on any tracked night.
| Site | Open site-nights |
|---|---|
| A | 3 |
| B | 3 |
| C | 3 |
| D | 3 |
The 4 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
The next bookable night is May 1, 2027; the first open weekend starts May 1, 2027. Campsite Sniper can watch later dates for you.
Multi-night stays. 4 2-night, 4 3-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest May 1, 2027 at site A.
RV length. Longest recorded site here is 60 ft. 4 sites take 25 ft, 4 sites take 35 ft, 4 sites take 40 ft.
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| A | 60 ft | None | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| B | 60 ft | None | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| C | 60 ft | None | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
| D | 60 ft | None | 3 | 3 nights | May 1, 2027, May 2, 2027, May 3, 2027 |
The Split Mountain Group Campground is located along the banks of the Green River at an elevation of 4,800 feet. The highly eroded Split Mountain towers over the campground. The campground is near the Quarry Exhibit Hall, where you can see 149 million year old dinosaur bones still encased in the rock. Adjacent to the campground is the Split Mountain Boat Ramp where river rafters come off the Green River after trips through Dinosaur National Monument's canyons.
Dinosaur National Monument covers over 210,000 acres (84984 ha).
Visitor Centers. The monument features two visitor centers - one in Colorado and one in Utah.
Quarry Exhibit Hall. You can see over 1,500 dinosaur fossils still in the rock inside the Quarry Exhibit Hall (Jensen, Utah).
History & Culture. Numerous cultural sites reveal stories of the people who lived here before and include Fremont petroglyphs, homestead cabins and former ranches. Hiking trails allow in-depth exploration.
Hiking . There are miles of trails for hiking and cross-country travel.
River Rafting & Boating. Whitewater rafting, both commercial and private, is popular on the Green and Yampa Rivers. The Yampa River multi-day rafting trips begin at Deerlodge Park. The Yampa rushes downstream 44 miles (71 km) to join the Green River at Echo Park. Boaters continue downstream on the Green River to the take-out at the Split Mountain boat ramp. The Yampa is the largest free-flowing tributary within the Colorado River system. As such, it has a shorter season marked by fluctuations in water level resulting from snow received in the winter. It is characterized by famous rapids such as Teepee, Big Joe and Warm Springs. Raft trips must be arranged in advance. For more information, visit Dinosaur's Commercial Guided River Trips page. Private River Trips require a permit.
Scenic Drives. Several roads provide access to key destinations and scenic sites. Scenic drives allow the windshield visitor to see spectacular geology.
The campground offers four group sites that accommodate both tents and recreational vehicles. Each campsite has a picnic table, campfire ring with grill and can accommodate up to 25 people and six vehicles. Drinking water and flush toilets are available from early April to early October. However, no water, sewer or electric hookups are available for recreational vehicles. RVs can not fill their potable water tanks at the campground.
The campground is set on a bench along the Green River and is dotted by Fremont Cottonwood and sagebrush. Campsites offer views of Split Mountain. Limited shade is provided by the few trees in the campground.
In addition to the monument, nearby Utah State Parks, the Ashley National Forest, Flaming Gorge National Recreational Area and Bureau of Land Management sites provide additional recreational opportunities in the area.
Split Mountain Campground is located approximately 12 miles (19 km) north of US Highway 40. Take Utah State Route 149 from Jensen, Utah.
View on Recreation.gov ↗ Get directions ↗












Reservations for Split Mountain Group Campground are made through Recreation.gov. 98.4% of tracked site-nights are not currently open for online reservation; 12 of 732 remain open. Campsite Sniper has also detected 8 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Nov 2, 2026 18:20 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
Campsite Sniper detected 8 site-date openings here over the last 90 days, none in the last 7. A free alert watches around the clock and pings you the moment one appears.
4 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts May 1, 2027 at site A. Confirm and book on Recreation.gov.
4 of the 4 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 60 ft.
May 2027, with 12 open site-nights in the current snapshot of 12.
As of the Nov 2, 2026 snapshot: the next open date is Sat, May 1, 2027 and the next open weekend starts Sat, May 1, 2027. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
Lakefront, hookups, your RV length, weekends only - set it as picky as you want.
We run paced availability checks for Split Mountain Group Campground. One watch covers every matching site.
When a match opens, you get a push with a Recreation.gov link so you can review and book it yourself.