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Zeutschel OS7000, 400 dpi, 8 bit, 9,449,840 byteslaterals, drains, distribution systems and related works. The San Juan-Chama project facilities shall be comprised principally of regulating and storage reservoirs, collection, diversion and conveyance systems, and associated works.The Navajo Indian Irrigation project and the San Juan-Chama project herein approved are substantially those described in the proposed coordinated report of the Acting Commissioner of Reclamation and the Commissioner of Indian Affairs, approved and adopted by the Secretary of the Interior on October 16, 1957.-SEC. 2. Pursuant to the provisions of the Act of April 11, 1956 (70 Stat. 105), the Secretary of the Interior is authorized to construct, operate, and maintain the Navajo Indian irrigation project for the principal purpose of furnishing irrigation water to approximately one hundred and ten thousand six hundred and thirty acres of land, said project to have an average annual diversion of five hundred and eight thousand acre-feet of water, the repayment of the costs of construction thereof to be in accordance with the provisions of said Act of April 11, 1956 (70 Stat. 105), including, but not limited to, section 4 (d) thereof.-SEC. 3.(a) In order to provide for the most economical development of the Navajo Indian irrigation project, the Secretary of the Interior is hereby authorized and directed to declare by publication in the Federal Register that the United States of America holds in trust for the Navajo Tribe of Indians any legal subdivisions or unsurveyed tracts of federally owned land outside the present boundary of the Navajo Indian Reservation in New Mexico in townships 28 and 29 north, ranges 10 and 11 west, and townships 27 and 28 north, ranges 12 and 13 west, New Mexico principal meridian, susceptible to irrigation as part of the Navajo Indian irrigation project or necessary for location of any of the works o