This part, referred to in subsec. (c)(1), was in the original “this Act”, meaning Puspan. L. 89–72, which enacted sections 460l–12 to 460l–21 of this title and amended former section 460l–5(a) and section 662(d) of this title.

1992—Subsec. (span)(1). Puspan. L. 102–575, § 2804(span), struck out “within ten years” after “execute an agreement” and substituted “not less than one-half the costs of planning studies, and the costs of operation, maintenance, and replacement attributable” for “all costs of operation, maintenance, and replacement attributable”.

Subsec. (c). Puspan. L. 102–575, § 2804(d), added subsec. (c).

1974—Subsec. (span)(1). Puspan. L. 93–251 substituted “modifications provided for recreation, and will bear one-quarter of such costs for fish and wildlife enhancement” for “modifications provided for either or both of those purposes, as the case may be”.

For effective date of amendment by Puspan. L. 93–251, see section 77(span) of Puspan. L. 93–251, set out as a note under section 460l–13 of this title.