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<br />0908
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<br />Distriot En8r, Albuquerque
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<br />Janu817 13, 1953
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<br />err.oUve llg1'ioultural use on 19,500 acres ot presently irrigated 1Sl'\d
<br />in the Purgatoire Mver Valley below Trinidad Reservoir, .and tor possible
<br />.fUture dC81lest1o and, industrial uses. The proposed project would consist
<br />of an earth dam on the Purgatoire Mver at mile 161, . ab~t four miles
<br />upstream :t'rom the Oity of Trin1dad, with spillway and outlet works.
<br />Reservoir storage oapaoity would total 140,700 aore-feet allocated as
<br />follows. flood oontrol 46,700 aore-teet; conservation 55,000 aore-teet;
<br />and sediment .39,000 aore-teet.
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<br />6. The report etates that $275,000 average annual flood control
<br />benefits, and $290,000 average annual irrigation benefits, would accrue
<br />to the proposed project. The total projeot investment was estimated at
<br />$17,850,000, based on November 1952 prices, with $8,681,000, allocated to,
<br />flood control and $9,169,000 allocated to irrigation. The cost for flood
<br />control was classed as federal investment and that for irrigation as
<br />non-tederal investmfll'lt.Total annualcherges would be $5,2,000 divided
<br />between $267,000 for federal and $285,000 for non-federal annual oharges.
<br />The ratio of $565,000 of total annual benefits to $552,000 of total an-
<br />nual charges gives a benefits-costs ratio of 1.02 to 1.00.
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<br />7. Recommendations of the District Engineer include the
<br />follOWing.
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<br />a. That the Trinidad Reservoir Project on Purgatoire River,
<br />Colorado, be constructed by the Corps of Engineers at an estimated :first
<br />cost of about $17,000,000 to be advanced by the United States, of which
<br />about $8,7.32,000 will be the reimbursable first cost for irrigation,
<br />to be retired by irrigation interests.
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<br />b. Concurrence in the recommendations of the Bureau of Reclama-
<br />tion that. (1) The Trinidad Dam and Reservoir be constructed by the Corps
<br />of Engineers for (a) nood control, (b) irrigation, (c) such compatible
<br />uses as fish and wildlife preservation and recreation, if such uses are
<br />foUnd to be economically justified, and (d) with provision for future
<br />development of hydroelectric power. (2) The Trinidad Res,ervoir be ope-
<br />rated by the Bureau of Reclamation for irrigation and other purposes in
<br />accordance 'with rules for nood control established by the Corps of
<br />Engineers.
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<br />Comments of the Fort Worth Office
<br />Federal Power Cnmmission
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<br />8. It is noted that the report in perllg1'aph 84, Volume 1 states
<br />there is ,a' definite need for electric power in the area. Recent estimates,
<br />by the Federal PCMer Commission (September 194i2) indicate that there will '
<br />be a need for power in power supply subarea .32-D amounting to 6,000 kilo-
<br />watts by 1965 end 22,000 kilowatts by 1970. Trinidad, Colorado and Raton,
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<br />APPEND IX G
<br />J>xhibit No. 10
<br />Page 2 of 4
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