Booked what looked like a decent site by the river and found it to be unusable when we arrived. I was considering just occupying a different site since the place was nearly empty. Thankfully a sheriff's vehicle was driving thru (which I mistook for a park ranger). He told me he'd try to help us get a different spot by calling the park office but on realizing that he had no cell service, he volunteered to drive to the office to see what he could get done for us. He returned after a short while with instructions for us to camp in an empty pull-through spot. We were very thankful for his help.

The good-

Beautiful canyon!!

Shade from big cottonwoods (it was 97 degrees!)

Some sites well spaced

Vault toilet was clean and supplied

There's good fishing there for big trout but unfortunately I was fishing this time around

The bad-

No cell or WIFI

A lot of strangely laid out sites, some ridiculously close to one another and unlevel 

Sprinklers in some areas that sprinkle your site, tent or whatever's exposed

Highway noise is bad - in a canyon sound bounces off the walls, many trucks on the road with much use of jake brakes and to top it all off, the occasional 2AM freight train rolling by on the other side of the river