Green River Campground

I like this campground (this was our second visit) because it's not super busy especially compared to some other National Parks/Monuments. The campground is pretty bare bones, there are flush toilets and water spigots but no dump station or showers. There are some spots that would accommodate even the biggest rigs.

There's a trail that goes from this campground to the group campground and boat launch and I recommend it, pretty hike. It also hooks into the Desert Voices trail which is fantastic (do it early; no shade). The Quarry is fun but running the river in a kayak or paddleboard is also a great way to see the place from a different perspective. There's a takeout called Placer Point about three miles down that's a nice leisurely hourlong paddle and is very chill. Be sure to get a "Play Permit" from the Visitor Center before floating the river. It's free but you need one for each day you're going to paddle. If you want a more guided approach, Adrift Adventures is a rafting outfitter at the junction of the place where you turn to get into the Monument and they were great.

The trails here are not very busy and you get to walk through so many years of geologic history in relative quiet.

Chipmunks are VERY aggressive, hide your trash and food.

This isn’t a kid-friendly environment. If your kids make typical kid noises, you’re going to be paid a visit by a Ranger. The sites are not flat. The bathrooms stink to high hell. There’s no water, there’s no dump, there’s no electricity. I’m not sure why you pay the $18 to boondock. There’s better places on the Colorado side of DNM. Don’t go here.

Nice campground, mix of small and large campsites. You’re right on the river, but it’s fast moving and we didn’t see access for anything other than fishing. (Kids were disappointed in that) The dinosaur quarry exhibit hall is a must, everyone enjoyed it.
We came in late afternoon on a Saturday and there were several first come first serve sites to pick from. The campground almost filled up by the end of the night, though. When we arrived, there were not many sites left that would accommodate our 24” trailer and truck.
Lots of wildlife in the campground, squirrels and bunnies, even a few deer.
We had a good ATT signal, surprisingly.
The road down into the campground is very steep, but it’s not long.

Buried in the TripAdvisor reviews are enforced quiet hours for this campground. We didn't test it and ran CPAP with a car battery. Also dealt with water/sewer before and after, didn't use the campground facilities.

Was a quick stop. In at midnight, pulled "through" the pullout style site, didn't unhitch, levelled as quietly as possible, up early, walked to the river (not visible from the site). Then packed up and parked at the quarry visitor center for our shuttle Tix, hiked petroglyphs and fossil loop, home to Denver that night.

Site was the only reservation left for a Saturday night. Knew we'd be in late so it was a good call to have it waiting.September cooler, but still noseeum gnats were out in force.

Would like to explore the Colorado side of the park next time, hear good things.

FWIW, the switchbacks on 191 are the most doable route if you're coming from Idaho/Wyoming as we were. Still pretty exciting doing that dam in the dark.

Several of the sites are small there are plenty to accommodate bigger rigs. Most sites are fairly level and a little close together. There are some really good short hikes in the area, one of which is right out of the campground. We also found some 4-wheeling in the monument and the surrounding BLM property. It looks like you may need reservations on the weekend but it is pretty open during the week.

Green River offers a variety of large, level, and spacious campsites in a natural setting with beautiful surrounding views. This is an ideal location for what most people think of as camping with access to Dinosaur National Monument and the Green River is a minute walk from any of the campsites. Each campsite includes a fire pit/grill (off limits during the current fire ban) and picnic table, and the campground offers bathhouses and drinking water (skinny non-threaded spigots with low water pressure, not intended for filling RVs). There are no RV services (filling water, dump station, or electricity), and tree cover is more in some sites/less in others (great for cover on the hot days, not so great if you are hoping to use solar). Verizon service was very minimal (texting worked), and the booster did nothing to improve the situation. This is a pretty National Park and easily accessible to big-rigs, and we would stay here again, but we'd pre-plan our outings to work around the lack of internet service. It's also worth noting that since the campground is located within the National Monument, you'll need to pay the entrance fee or have an America The Beautiful park pass.

...if you're not concerned with long dirt roads or very large RV spots, there is simply so much better than this place.

If it were the only option, sure, it's pretty nice. But there's better river access at the other two campgrounds, there are less people, and the people who were camping here just weren't digging the "worldwide pandemic, be nice" or even "be nice" parts of camping which I consider essential.

I also blame the hosts and rangers, who did nothing to enforce safety precautions in the visitors center or the campground. So (sticks tongue out, takes ball, goes home), there.

Having gravitated toward free campsites lately, I’ve become pickier about paid sites. The $18/night rate reflects having access to running water and flush toilets, I believe. We were able to find an amazing shady spot that accommodated our two sleeping tents plus a shade tent over the picnic table that was close to the restroom and the river. If we had been in some of the less-shaded spots that were a longer walk to the restroom or the river, I might have been a little less approving of the $18 cost, but if you’re accustomed to paying upwards of $40/night at RV parks, the location and the larger, more private sites will make this feel like a bargain (but no dump site). Trash and recycling is provided. It was a great base camp for seeing Dinosaur NM.

There are a few options in Dinosaur and in Vernal for gas, restaurants, and supplies, but if you’re used to larger towns/cities, you’ll find the offerings limited, so don’t plan to eat most of your meals out, if that’s something you enjoy doing on a trip. My friend and I both use Verizon and our service varied a bit. We were generally able to send/receive text-based messages from the campground, but expect to have to drive to get better signal (but you may have better luck than I did).

The campground has a few different kinds of sites—some back-in and some “pull-up” (not really pull-through, but you can sidle your rig alongside some sites where the parking spot is a widening of the road, if that makes sense). Loop B is reservable online, but loops A and C are first-come, first-served.

While in the park, we explored some of the other campgrounds. Rainbow Park was absolutely horrible for mosquitoes (mid-June). We had a much better time at Green River Campground than we would have at Rainbow Park. We still went home with some bites, but nothing like Rainbow Park.