There are authorized to be appropriated annually such sums as are necessary to implement sections
577c,
577d, and
577e to
577h of this title: Provided, That the total appropriations under the authority of said sections shall not exceed $9,000,000 for the purchase and condemnation of lands, water, or interests therein, and that funds made available through the provisions of the Land and Water Conservation Fund Act (
78 Stat. 897), as amended [
16 U.S.C.
460l–4 et seq.], may also be used for such acquisitions: Provided further, That such appropriations may be used for the payment of court judgments in condemnation actions brought under authority of sections
577c,
577d, and
577e to
577h of this title without regard to the date such actions were initially instituted.