The Salt is a gaining river, sometimes dramatically. In 2019, it was 16,500 cfs at Chrysotile and 35,000 cfs at Roosevelt. If you went by the put-in gage, you'd be way off on the flows at Quartzite/Corkscrew.
The math to interpolate isn't too hard: RiverMile/52 x (RooseveltFlow - ChrysotileFlow) + ChrysotileFlow = FlowEstimate
Flows predicted to be almost 14k cfs at the put-in and 22k cfs on 3/23 at the takeout.
If my math works, that'll mean:
31.75/52 x (22-14) + 14 = 18.884 k cfs peak flow at Quartzite on 3/23
I would layover above that one. Be careful out there.