Monohan Flats is an open upland campsite located at river mile 33 on the Gulkana River with an easy gravel landing, accommodating groups of up to 6 people with 3 tents.

Named after Peter Monohan, an early 1900s prospector credited with discovering gold at Valdez Creek, this site offers convenient river access for paddlers floating the popular 47-mile Paxson Lake to Sourdough Campground route.