sary to resolve appellants’ first point. By the Act of August 24, 1962, 76 Stat. 395, the Congress authorized the Secretary of the Interior “to construct, operate and maintain the Arbuckle Federal reclamation project” in Oklahoma, the same to be done “in accordance with the Federal reclamation laws (Act of June 17, 1902, 32 Stat. 388 and Acts amendatory thereof or supplementary thereto), for the principal purpose of storing, regulating and furnishing water for municipal, domestic, and industrial use, and for the conservation and development of fish and wildlife, and the enhancement of recreational opportunities. The project shall consist of the following principal works: A reservoir , pumping plants, pipelines, and other conduits for furnishing water for minimum basic recreational facilities.” Section 6 of the Act, in pertinent part, further expressly provides: “The Federal costs of constructing the facilities authorized by this section shall be limited to the nonreimbursable cost of the Arbuckle project for minimum basic recreational facilities as determined by the Secretary.”
Historically this type of legislation is initiated by a letter report from the Bureau of Reclamation of the Interior Department to the Speaker of the House of Representatives. The Act under consideration here was so initiated and the report was designated House Document No. 242, 87th Congress, 1st Session (1961). The evidence in the record, without dispute, shows that such a report is merely a feasibility report and at most is only a tentative plan for the project being initiated. The report did contain an estimate of the recommended acreage for recreational use over and above the acreage necessary for the construction and maintenance of the dam and reservoir. Attached to the report were maps showing the area proposed to be taken. Appellants’ land was not within that area.
Appellants first attack the validity of the taking of their lands. To support this point they argue that the Act contained limitations upon the taking of land for the project in that there was a defined take line, there was an actual limitation of acreage, and the minimum basic recreational facilities were defined. The fallacy in this argument results from their use of the feasibility report to read into the Act restrictions that do not exist. All such projects must in some way be initiated for consideration by the Congress and it is apropriate for the Secretary of the Interior to take this first step after determining, by a preliminary examination of the proposed project, that the project is feasible and what the probable costs will be. In this determination, and in preparing the report, the Secretary must in a broad way define the project in terms of acreage and probable facilities. Nevertheless, the report is not a part of the Act and we believe it is inappropriate to use the report, or any other part of the legislative history, to arrive at an interpretation of the meaning of the Act. Such practice becomes necessary only if the act in question is ambiguous.1 The Act here is clear and unambiguous thus we find no reason to look behind the plain language of it. The Act did not attempt to define the term “minimum basic recreational facilities” but left such determination to the Secretary of the Interi- or.2 It only limited the authority of the Secretary by the overall funds appropriated to carry out the intent of Congress as expressed by the Act. We must therefore reject the argument of appellants on this point and look only to the clear language of the Act which contained sufficient authority for the taking of appellants’ lands.
1
Helvering v. City Bank Farmers Trust Co., 296 U.S. 85, 56 S.Ct. 70, 80 L.Ed. 62 (1935); Wilbur v. United States ex rel. Chestatee Pyrites & Chemical Corp., 284 U.S. 231, 52 S.Ct. 113, 76 L.Ed. 261 (1931); and United States v. Missouri Pacific R. Co., 278 U.S. 289, 49 S.Ct. 133, 73 L.Ed. 322 (1929).
2
See the pertinent part of Section 6 quoted above.