Right on the San Juan River
The campground is reached via 511 to 173 (top of the hill when you see The Sportsman Bar and Grill and a scenic drive). Wind through the little town of Navajo Dam, cross the river and then you turn on Rd 4280, which is approximately 2 miles of rough washboard gravel. This takes you to the park entrance which is nicely paved. The entrance is currently under construction as of my visit and there is heavy machinery moving earth to make a more elevated entrance road. The need for this was evidenced by signs of washouts on the existing entrance road. However, this construction has nothing to do with the rough gravel road leading to the park entrance road.
Once inside, this campground is a big loop with 47 campsites coming off like spokes on a wheel. The inside sites have views of the other sites across the circle. The outside loop sites are more private.
Overall, the campground is nicely shaded by large cottonwoods and many of the sites back right up to the river. There is a decent amount of space between sites. A few don't have much in the way of vegetation between them, so not much privacy for those. There are back in and pull through sites. Also a dump on site and a group site. Hookups for water and electric. I used the restrooms and they were clean and adequate. Not sure if there were shower facilities. I didn't use them.
There is a paved trail to the river with benches for relaxing and taking in the beauty of the San Juan and there is a trailhead at the end of Rd 4280, but I didn't hike it.
I had zero Verizon cell service. Had to drive up to The Sportsman Bar and Grill in Navajo Dam to get a signal.
This is a fly fishers paradise as you can wade right into the river, fish and then walk back to your campsite with your catch.