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,l 00:;' 768 , i, CLOSED RASIN DI~!SION - The commencement of construction of the Closed Basin Drain is contingent on (a) conciusive finding of justification therefor on the casis of cost a~d the quantity and quality of water to ce secUl'ed, and, (c) making: of adequate arrangements, in the' opinion of the Secretary, for maintenance of the drain (Act of June 18, 1940, qh. 395, 54 Stat. 406.) The contemplated works would consist of an open drain some 35 miles in length, extending from Saguache Creek to the Rio Grande, the main purpose of the drain being to augment the flow of the Rio ~rande by means of drainage return from the Closed Basin, and hence permi t an equa.l amount of Rio Grande water to ce used in the San Lui s Valley. Gaging of surface inflow to the Closed Basin area was carried on throughout,the month as climatic conditions permitted. j ] , j Test well drilling: was in progrsss throughout the month. WEMINUCHE DIVISION The authorized worke of the Weminuche Division will provide for the diversion of e~ average of about 24,000 acre-feet of water annually from the Colorado River Basin for use as a supplemental supply to the Rio Grande Division of the Project. ,~ ~ Preliminary surveys have been completed. Water supply studies are being reviewed and stream gagings are being continued. , , COLORADO - RIO GRANDE PROJECT INVESTIGATIOnS , I ! ~ , The Colorado-Rio Grande Project Investigations are studies of the potentialities of diverting waters surplus to the Colorado River .Basin to the Upper Rio Grande Besin to provide a supplemental irri- gation supply for presently irrigated lands and full supply for new lands in the San Luis Valley, Colorado. ,The plan of development includes' diverting. water across or under the Continental Divide from the Piedra, Animas and Gunnison Rivers. Approximately 40 miles of preliminary canal lines have been traversed, profiled and contoured in connection with the Piedra-Rio I ,. f I -2-