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.' loo4. o ~ N HISTORY OF WATER RESOURCE DEVELOPMENT (continued) discharge to the Colorado River downstream from Morelos Darn, volumes of drainage waters from the Wellton-Mohawk Oistrict at the annual rate of 118,000 acre-feet and substitute thereof an equal volume of other waters to be discharged to the Colo- rado River above Morelos Dam; and, pursuant to the decision of Pres ident Echeverria expressed in the Joint Communique of June 17, 1972, the United States shall discharge to the Colorado River downstream from Morelos Dam the drainage waters of the \,ellton-Mohawk District that do not form a part of the volumes of drainage waters referred to above, with the understanding that this remaining volume will not be replaced by substitution waters. The commission shall continue to account for the drain- age waters discharged below Morelos Dam as part of Article 10 of the Water Treaty of February 3, 1944. "3. As a part of the measures referred to in point Ha), the United States shall extend in its territory the concrete lined Wellton-Mohawk bypass drain from Morelos Dam to the Arizona- Sonora international boundary, and operate and maintain the portions of the Wellton-Mohawk bypass drain located in the United St ate. . .' "4. To complete the drain referred to in point 3, Mexico, through the Commission and at the expense of the United States, shall construct, operate and maintain an extension of the concrete-lined bypass drain from the Arizona-Sono~a international boundary to the Santa Clara Slough of a capacity of 353 cubic feet per second. Mexico shall permit the United States to dis- charge through th is drain to the Santa Clara Slough all or a portion of the Wellton-Mohawk drainage waters, the volumes of brine from such desalt ing operat ions in the United States as are carried out to implement the Resolution of this Minute, and any other volumes of brine which Mexico may agree to accept. It is understood that no radioactive material or nuclear wastes shall be discharged through this drain, and that the United States shall acquire no right to navigation, servitude or easement by reason of the existence oE the drai.n, nor other legal rights, except as expressly provided in this point. "5. Pend ing the cone I us ion by the Government. of the Un ited States and Mexico of a comprehens ive agreement on ground \olater in the border areas~ each country shall limit pumping of ground watel-S in its terr itOl-y with in 5 miles of the Ar izona-Sonol-a boundary near San Luis to 160,000 ac<e-feet annually. . "6. With the objective "f avoiding future problems, the United States and Mexico shall consult with each other prior to under- taking any new development of either the surface or the ground water resources, or undertaking substantial modifications of present deve lopment s, in its own terr itory in the border area that might adversely affect the other country. 26