They sure ain’t skimping on the rebar this time around...
The new spillway design/construction, when compared to the old design, is hard to even describe in the major improvements in structural integrity.
The only questionable "weak" area, compared the the density of the sidewall slab anchor bolts (30) is the transverse force transfer of the density of these anchor bolts to the vertical junction of the Sidewall Slab. Perhaps Finite Element Analysis simulations were performed that answer the complex transfer of forces of the concrete/rebar design at this junction. If you calculate the total 30 anchor bolt "hold down" tensile strength, minus the bolts for the horizontal spillway flow, the bolts exceed the transverse forces by the straight concrete and rebar alone intersection that is assumed to be for sidewall forces (including max flows during an earthquake).
(This discussion was in prior postings). It would have been helpful if DWR would have released this information so that these structural questions may be open for analysis (to immediately catch any "oversights").
However, it is too late now to change the design.