The Feather River is is the outlet for the Oroville Dam. Floodplain deposits besides this river would tell us the shear velocity during certain floods and what particle sizes would comprise the suspended, incipiently suspended, and bedload. If the sediments behind the dam were cored, we could figure out what shear velocity is necessary for the largest particle size to be carried in the suspended, incipiently suspended, or bedload. This would enable us to figure out what velocity of the river would deposit the largest and coarsest amount of sediment on the floodplain.
Link for info on possible flooding of the Feather River: http://www.latimes.com/projects/la-me-oroville-flooding/