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562" 000 aU,'~; f<<~d to which Arizona has a dearly' established right for future devclopme:ut altmg the main shearn of the Colorado River in the Parker area and Mohave Valley, and in the Little Colorado River Basin. Then she further points out tha,t there will still be a surplus of 222,000 acre feet, of which Arizona would share in part. The comments give some further information about the GHa Project, particularly the proposal to change the original GUa Project by cutting down the Yuma Mella Unit as originally authorized, and in lieu thereof, putting in the so -called Mohawk Unit, which is above Yuma about 25 miles. With respect to '":entral Arizona, her comments state that "*** irrigation of lands in Central Arizona has been expanded beyond the water supply of Central Arizona, both by diversion from the surface streams and by pumping from the underground reseryoirs to such a great e ><tent that I am advised by engineers that the people of Central Arizona are now using approximately 300,000 acre feet of water per year more than corres into that area; in other words. they are exhausting underground reservoirs at a rate in excess of 800,000 acre feet per year. Such a p~'actice, of course. endangers the entire economy of Arizona and cree,tea a very real danger to the economy of the United States and to the nationallnterest. In view of the rapid exhaustion of underground reservoirs, we in Arizofl,a have determined that two things are necessary, we must adopt an underground water code which will prevent over-pumping and we must obtain a supplemental supply of water by the divll';rsion of water from ~he main stream of the Colorado River to Central Al.izona." , . MR.MATTHEW~ I would like to invite discussion on these comments. There is no one here from Arizona unless someone came today . I might point out again a thing that was mentioned yesterday -..that the Bureau"s report stated that they had no intention of making interpretations of the Colorado River Compact or the Boulder Dam Compact, or any of the related contracts, court decisions, etc. Some of the States, therefore, in presenting their comments, refrained from presenting anything at aU in reference to those documents. Arizona, in her comments. sets forth her interpretation of the Colorado River Compact, Boulder Canyon Project Act, and contracts. etc., as she sees it. Any discussion 'in regard to Arizona? CHAIRMAN; There's one question I \\Ould like to ask--whethf;r you kl10W the attitude taken by Arizona. They claim the right to sit in the Upper Basin States cOllndls for the division of water, on the ground that the Sal1 Juan drains thf' eastern corner of the State, -47-