Wahweap, north of Page, is the last major launch ramp to close when the water level gets low. Wahweap, Bull Frog and Halls Crossing have plenty of truck+trailer parking if the water level is up in late spring and early summer. All 3 have gas and diesel pumps, showers, trash dumpsters, pump outs (adapter needed), overnight moorage, small stores (just very minimal food) and fresh water.
As of last year Dangling Rope has gas, trash dumpster and ice but NO diesel or pump out or fresh water.
My guess is that “The Cut” will be closed by mid-August. It was only 8 ft deep last September and 30 ft lower this year compared to 2020 would make The Cut high and dry.
By the way, diesel and gas are much cheaper if you fuel up before launching. At the Pilot station north of Wahweap we saw diesel at $2.80 a gallon compared to $5.30 a gallon at the marinas.
PS: Showers are way up the hill at Bull Frog but the marina office can arrange a free shuttle. Good tip going up gets you a timely return to the marina.