The provisions of subsec. (a) of section 501 of Pub. L. 90–537 which amended this section are only a part of said subsec. (a). The remainder of said subsec. (a) amended section 620a of this title and enacted provisions set out as notes under this section and section 620k of this title.

1980—Pub. L. 96–470 struck out proviso that construction of Uintah unit of Central Utah proj­ect not be undertaken by the Secretary until he has completed a feasibility report on such unit and submitted it to Congress, along with his certification that, in his judgment, the benefits of such unit or segment will exceed the cost and that such unit is physically and financially feasible, and that the Congress has authorized appropriations for construction thereof.

Pub. L. 96–375 substituted “Wayne N. Aspinall” for “Curecanti”.

1968—Pub. L. 90–537 added Uintah unit to initial phase in Central Utah project, substituted “Animas-La Plata, Dolores, Dallas Creek, West Divide, San Miguel” for “Pine River Extension”, and inserted proviso prohibiting construction of Uintah unit of Central Utah project until a feasibility study is made, a determination is made that its benefits will exceed its costs and an authorization for appropriations is made by Congress.

1964—Pub. L. 88–568 included Savery-Pot Hook, Bostwick Park, and Fruitland Mesa as participating projects.

1962—Pub. L. 87–483 included San Juan-Chama (initial stage) and Navajo Indian as participating projects in cl. (2).

Act Apr. 11, 1956, which enacted this chapter, is popularly known as the “Colorado River Storage Project Act”.

Section 501(a) of Pub. L. 90–537 provided that the amendment of this section and section 620a of this title by such section 501 (a) were made in order to provide for the construction, operation, and maintenance of the Animas-La Plata Federal reclamation project, Colorado-New Mexico; the Dolores, Dallas Creek, West Divide, and San Miguel Federal reclamation projects, Colorado; and the Central Utah project (Uintah Unit), Utah, as participating projects under the Colorado River Storage Project Act, and to provide for the completion of planning reports on other participating projects.