State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Imperial Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants : the United States of America and State of Nevada, interveners : State of Utah and State of New Mexico, impleaded defendants : report / Simon H. Rifkind, special master

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21 stantial beneficial effects.75 Congress thereupon passed the Kinkaid Act of May 18, 1920,78 which directed the Secretary of the Interior to make a study of certain of the River's problems. The Fall-Davis Report," submitted to Congress in February 1922, is a result of that legislation. Some of its relevant portions are recited in the footnote.78 TBSee Department of the Interior, Report of The Ail-American Canal Board 22-29 (July 22, 1919), Calif. Ex. 185. 7«41 Stat. 600. "Sen. Doc. 142, 67th Cong., 2d Sess. (1922), Ariz. Ex. 45. 78The Report opens with the following statement: "The control of the floods and development of the resources of the Colorado River are peculiarly national problems for several good reasons: 1. The Colorado River is international. 2. The stream and many of its tributaries are interstate. 3. It is a navigable river. 4. Its waters may be made to serve large areas of public lands naturally desert in character. 5. Its problems are of such magnitude as to be beyond the reach of other than national solution." Ariz. Ex. 45 p. 1. The recommendations of the Report were as follows: "1. It is recommended that through suitable legislation the United States undertake the construction with Government funds of a high-line canal from Laguna dam to the Imperial Valley, to be reimbursed by the lands benefited. 2. It is recommended that the public lands that can be reclaimed by such works be reserved for settlement by ex-service men under conditions securing actual settlement and cultivation. 3. It is recommended that through suitable legislation the United States undertake the construction with Government funds of a reservoir at or near Boulder Canyon on the lower Colorado River to be reimbursed by the revenues from leasing the power privileges incident thereto. 4. It is recommended that any State interested in this development shall have the right at its election to contribute an equitable part of the cost of the construction of the reservoir and receive for its contribution a proportionate share of power at cost to be determined by the Secretary of the Interior. 5. It is recommended that the Secretary of the Interior be empowered after full hearing of all concerned to allot the vari-