I havent found a good resource - probably because there is not a good way to do it. I depend a lot on durana clover. Since I usually cant get equipment into my plots in the spring to do anything, I need something that can MAYBE make it on its own. Durana seems to be able to withstand about two to three week durations of inundation. It will also hang on in surprisingly wet, soft ground. I plant wheat into my durana plots in the fall when it is dry enough to work for a quick green up to hunt over. I dont depend on the wheat to provide anything else. Hogs will graze durana, but they dont tend to root too badly in it. If durana plots are too wet to access in early to mid summer for bush hogging, weeds may actually shade the durana enough to get it to last throughout the summer.
If you do find conditions allow planting in bottomlands mid summer, I like milo or wgf sorghum. It is fairly drought resistent and later plantings may allow the heads to last into deer season, and if flooded in the fall or winter, can also provide some decent duck hunting. Hogs dont seem to root the planted seeds like they will corn or soybeans.
Persimmons, native pecan, and mayhaws for bottomland mast source, along with a variety of oak species. Ash and box elder stands provide excellent summer thermal cover as those trees will typically provide a dense canopy, shading out underbrush, providing relief from the sun and open sub story for unimpeded breeze.
I am all ears if anyone has any other flood prone successes. Managing in those areas can be very frustrating - and what worked this year may not work next year.