; (2) to raise existing reservoirs; or (3) to enlarge the carrying capacity of a canal constructed by the Bureau of Reclamation, except for a temporary increase in carrying capacity that is intended— (A) to mitigate anticipated future subsidence; and (B) to avoid an increase in carrying capacity that would otherwise be required on the occurrence of anticipated future subsidence. (c) Additional amounts Amounts made available under subsection (a) shall be— (1) in addition to any other amounts made available for the purposes described in that subsection; and (2) nonreimbursable.