AZ vs. CA:25 California Exhibits, Vol. XXV; Nos. 7501-7859

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VI That part of the Colorado River which flows on the boundary between Arizona and California and between Arizona and Mexico flows between comparatively low banks, is therefore easily accessible, and is comparatively free from rapids and cataracts, but is obstructed by numerous sand-bars and is too shallow to permit of navigation. Said river carries great quantities of silt, which are constantly being deposited within and upon the bed thereof, and which, while so carried and after being so deposited, constitute a further obstacle to the navigation of said river. Another obstacle to the navigation of said river has resulted from the construction of said Laguna Dam by the Government of the United States, and the diversion of great quantities of water from said river for irrigation and other purposes. Because of said conditions, said river has never been, and is not now, a navigable river. VII The total average flow of the Colorado River and its tributaries in the United States is 18,000,000 acre-feet of water annually. Of said total flow, 9,000,000 acre-feet were appropriated and put to beneficial use in the United States prior to June 25, 1929, and said appropriated water has ever since been and is now being used and consumed. Of said appropriated water, 2,500,000 acre-feet are diverted annually from the Colorado River above Lee Ferry and from tributaries entering said river above Lee Ferry, and are used and consumed in Utah, New Mexico, Colorado and Wyoming, and 6,500,000 acre-feet are diverted annually from said river below Lee Ferry and from tributaries entering said river below Lee Ferry, and are used and consumed in Arizona, California, Ne-