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. """"!r" ~ !.i~l. " .' Operating statistics of the river for the water year 1973-74 are presented in Tables 1 through 6. These follow with accompanying discussions. " TABLE 1 lIEASURED FLaJ IN COLORADO RIVER ArID TRIBUTARIES FOR HATER Yi!:AR 1973-74 (Thousands of Acre-feet) Station l-ieasured Flow Upper Basin Green River at Green River, Utah Colorado River near Cisco, Utah San Juan River near Bluff, Utah Colorado River at Lee Ferry 4,582 4,506 1,087 8,283 Lower Basin - Colorado River Near Grand Canyon Below Davis Dam Below Parl:er Dam At i'Jortherly International Boundary above Morelos D~n 13,500 8,892 7,283 1,338* * For Calendar Year 1974, the flo\'! at the Northerly Inter- national Boundary \'!as 1,336,000 acre-feet and was part of the 1944 i'iexican Hater Treaty minir.1UTa obligation of 1,500,000 acre-feet annually. Additional deliveries to J.Iexico during the 1974 Calendar Year included 108,000 acre-feet delivered at the Southerly Internationa'L Boundary near San Luis, 9,700 acre-feet delivered to the City of Tijuana through facilities in the United States, and 211,000 acre-feet of irrigation drainage I'!aters of the l1ellton-J,iohawk Irrigation and Drainage District discharged belo\'! I:Iorelos Dam, for a total delivery of 1,665,000 acre-feet. .' Table 1 shows the measured flow at key stations. The first three stations listed in Table 1 represent over 90 percent of the flow into Lake Powell. As has been the case for a nUiaber of years, flows belo\'! Davis Dam were limited to meeting the consillllptive use requirements of the United States ai1d the Hexican \'later Treaty delivery requirements. Table 2 shows changes in storage for the Colorado River Storage Project reservoirs and Fontenelle Reservoir in the Upper Basin, and the major Lower Basin reservoirs in water year 1973-74. Overall, the total storage decreased by 265,000 acre-feet during the year. " - 2 -