Although there are a few actual campgrounds in the Buffalo creek area, there are also quite a few designated dispersed campsites along the road. They are clearly marked and were pretty full on a Saturday of Memorial Day weekend (but what isn't?). There's several creeks that run through the area and a network of trails that intersect the Colorado Trail and the road. The area is popular with mountain bikers.

It was completely snow free when we visited for Memorial Day, and the creek was flowing high. There were some fish in the creek, but nothing big enough to catch. We chose to park at a designated parking area and hike a short distance on the Colorado Trail to camp. We found a nice spot that had clearly been camped in before as there was already a fire ring. 

Overall, lots of space to camp and play and a good option for the shoulder season when higher options are under snow.