Gremlins on it. Its the Tropic Ditch, whuch runs from the headwaters of the EF Sevier 25 mi to the town of Tropic, spilling off the side of the Paunsaugunt Plateau and crashing through an ephemeral canyon down to the valley below. Its been running steady for a century, its base flow is just too low, but with a little bit of boost, even 10-15 cfs, it would be a fun hike and ELF run.
There is a sketchy waterfall located a few hundred yards above where the ditch goes underground, maybe 18' ish? Its totally doable, it would just require a good boof. If it hasnt been run befor i would be surprised. Its somebodies cup of tea.
"Don't f$&@ing eddy out, just run it! Whaddya doin??" -LMyers