There is a good take-out boat ramp on river right, immediately upstream of the highway bridge in Moab. It's frequently used by outfitters for launches to Potash and Cataract.
Upstream access should be much easier at these flows, as the concrete ramps at Dewey, Hittle Bottom, Rocky Rapid, and Salt Wash/Take-Out landing will actually be in the water.
As for rapids, i expect most will be washed out. New Rapid will have large waves on river left, and a hole just right of center at the top. At high flows the river-right eddy at Rocky Rapid (against the wall) can get very dynamic and swirly. Ive had my raft tubes sucked into a vortex while trying to get out of that thing. At 37-38K, it might not be an issue, since you can run much farther left...
If you can, please take the time to participate in American Whitewater's short flow survey
for this section. We need all the reports we can get!