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Show XI-20 UPDATING THE HOOVER DAM DOCUMENTS UNITED STATES DEPARTMENT OF THE INTERIOR OFFICE OF THE SECRETARY WASHINGTON 1108 JANUARY 17, 1969 Memorandum To: Director, Bureau of Land Management Through: Assistant Secretary, Public Land Management From: Secretary of the Interior Subject: Western boundary of the Colorado River Indian Reservation from the top of Riverside Mountain, California, through section 12, T. 5 S., R. 23 E., S.B.M., California I have this date received a memorandum from the Solicitor regarding the proper location of the boundary of the Colorado River Indian Reservation in the subject reach. A copy of his memorandum is attached. Acting upon the conclusions expressed in the memorandum, I have determined that certain surveys of record in your Bureau should be suspended and other surveys reinstated so as to correctly show the interest of the Colorado River Indian Tribes in certain lands. The presently monumented boundary of the reservation in the reach between Riverside Mountain and the Colorado River is shown on the plat of survey for T. 2 S., R. 23 E., S.B.M., approved November 20, 1913. I have concluded that this survey did not correctly locate the boundary line in this reach because it did not conform to the call of the Executive Order of May 15, 1876, that the boundary should be a direct line from the top of Riverside Mountain, California, toward the place of beginning to the west bank of the Colorado River. I have determined that the above-mentioned plat of survey should be suspended. The proper position of the reservation boundary should be a line from the highest point on Riverside Mountain to the meander corner common to fractional sections 25 and 36, T. 2 S., R. 23 E., S.B.M., as shown on the plat of survey of this township approved May 22, 1879, and reestablished by the dependent resurvey of the same township reflected on the plat of survey accepted July 22, 1958. I have also determined that the proper location of the reservation boundary from section 25, T. 2 S., R. 23 E., S.B.M., through section 12, T. 5 S., R. 23 E., S.B.M., is along the meander lines shown on the plats of survey in Tps. 2, 3 and 4 S., R. 23 E., S.B.M., approved May 22, 1879, and T. 5 S., R. 23 E., S.B.M., approved December 28, 1874, all as reestablished by the dependent resurvey of these townships reflected on the plats of survey accepted July 22, 1958. In 1961, accretion surveys of lands now lying between the aforementioned meander lines of 1874 and 1879 and the west bank of the Colorado River were undertaken in Tps. 3 and 4 S., R. 23 E., S.B.M., and T. 5 S., Rs. 23 and 24 E., S.B.M. Plats thereof were accepted on May 21, 1962. By your letter of January 27, 1964, to the State Director at Sacramento, California, you ordered that the plats of survey in Tps. 3 and 4 S., R. 23 E., S.B.M., be suspended as to the sections 36 in those townships. Thereafter, correction surveys of those sections 36 were undertaken which apportioned to them certain accretion lands. Plats of these correction surveys were accepted on October 28, 1964. In light of the conclusion that the reservation boundary in the subject reach is along the meander lines established in 1874 and 1879, accretions to this boundary are lands of the United States held in trust for the Colorado River Indian Tribes. Thus the correction surveys, accepted October 28, 1964, apportioning |