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<br />other purposes, regulation of guaranteed T~eaty water at the boundary. <br />Morelos Diversion Dam, about one mile downstream from the northernmost <br />international boundary, was constructed and is operated at the expense of <br />Mexico for diverting water from the river in Mexico. <br /> <br /> <br />Delivery of Treaty Waters <br /> <br />From November 8, 1950 to the end of that calendar year, Mexico <br />requested delivery at the minimum rate stipulated in the Treaty - 900 c.f.s., <br />in the bed of the river under the conditions of paragraph 15(g) of the Treaty. <br />Such deliveries totaled 105,000 acre-feet. Total flow in the international <br />boundary section during this period was 517,000 acre-feet. <br /> <br />Prior to January 1, 1951, the Commissioner for the United States <br />informed the Mexican Commissioner that pursuant to Article 10(b) there <br />would exist during 1951, waters in excess of the amount necessary to satisfy <br />the requirements in the United States and the guaranteed quantity of 1.5 <br />million acre-feet to Mexico, and that the Mexican Section might schedule <br />such surplus waters to complete a quantity: up to 1.7 million acre-feet. <br />The Mexican Commissioner submitted Mexico's schedule by months for delivery <br />of this quantity of water, and requested that again all Treaty deliveries be <br />made in the bed of the river under the conditions of paragraph l5(g). During <br />the first eleven months of this year 1,645,000 acre-feet of scheduled Treaty <br />waters were delivered to Mexico, leaving 55,000 acre-feet for delivery this <br />month. <br /> <br />Total River Flow, Diversions by MexiQo, and Discharge to the Gulf <br /> <br />The United States measures the flow of the river at the upper end <br />of the international boundary section and ,the flow of wasteways to this <br />section from the Yuma Project. During the past eleven months, 3,200,000 <br />acre-feet entered the boundary section; estimated total for the year'is <br />3,50b,000 acre-feet. Most of the excess ~aters above scheduled Treaty <br />deliveries occurred during the winter. R~ver flow reaching the boundary <br />section in 1951 will be about 67% of the average annual quantity since <br />storage began in Lake Mead in 1935, and about 26% of the average during <br />the period 1902-1935. <br /> <br />Diversions at Morelos Dam during 1951, will amount to about 1.5 <br />million acre-feet. In addition, Mexico w~ll have diverted about 400,000 <br />acre-feet at pumping plants below the dam; Discharge into the Gulf probably <br />will be about 1.6 million acre-feet. <br /> <br />Operation of Morelos D~version Dam <br /> <br />In Minute No. 197 of the Commission dated June 30, 1951, rules <br />were adopted for operation of this dam. It was agreed that: <br /> <br />-28- <br />