First come first serve. Was delighted to pull up to a spot at 4:30 PM. It was a little nerve-racking to cross a running river in a sedan. Unrivaled views of the red rocks. Driving in be prepared for roads without guardrails but the most stunning drive of your life.
After finding your site, walk to the front billboard with $15 to put in an envelope provided in their cash box, then take a portion of the envelope as your reservation on the sites post.
Site 8 was spacious and had an picnic overhang structure to block sun.