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is a constructed proj ect in Arizona, taking water out of the stream a short distance below Parl~er Dam, there would be irrigated only 60,000 acres. I think the proj ect can serve some hundred thousand actes of land or possibly more. "We are also assuming under that condhion that there would be the minimum possible amount of water used on the Yuma proj ect under the assumption that the Yuma project canals would be lined. Under that condition we estimate there would return to the stream below Imperial Dam about 806,000 acre-feet of water. That does not include desilUng water. "Senator DOWNEY. That was on the basis of the testimony that there would be only 80,000 acres irrigated down in the lower Gila Valley? "Mr. TIPTON. Yes, sir; and 60,000 on the Indian project. "Senator McFARLAND. Now will you break that down? "Mr. TIPTON. Yes, sir. This is the break-down of the 806,000 acre-feet. . . . "The break-down of the return flow is as follows: From north Gila Valleynnorth Gila Valley is an area which is al present irrigated; it has been irrigated for many years in Arizona and is immediately below the cana l line which has been constructed to serve the Gila proj ect-- "Senator McFARLAND. The return flow from that proJect, as I understand you, cannot be reused? "Mr. TIPTON. By direct diversion. It could be used by pumping into the All-American Canal. "Senator McFARLAND. How much do you estimate from that? "Mr. TIPTON. Twenty thousand acre-feet. From the Yuma projectn understand, this is cutting the diversion to the limit and only letting sufficient water return to take care of the salt balance which I men- tioned a while ago--12 0,000 acre-feet. "-S~l'iaror-NfCFARIAND-;--Tnat iS1J1e area which you describe down there on the mesa? "Mr. TIPTON. No; it is the existing Yuma project. "Senator McFARLAND. Oh, the existing Yuma project? "Mr. TIPTON. Yes, sir. I should make that plain to the committee. There is at present irrigated below Imperial Dam an area of land which comprises some 65,000 acres. Most of the land lies in Arizona. Some of it lies in California. Diversions were made in the Laguna Dam, which is immediately below the Imperial Dam, on the California side. Water was carried to the California lands and then carried to the Arizona lands by means of a siphon under the river. Those lands will now be served through the All-American CanaL which will release water at the so-called Siphon Drop. "Senator McFARLAND. Those are lands which are now being irrigated? "Mr. TIPTON. Yes, sir. -18- ,