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<br />~ <br /> <br />. <br /> <br />. <br /> <br />tv <br />~ <br />~ <br />~ <br /> <br />should be increased notably, it will be necessary to make <br />a greater use of the abundant (freaticas) water which exists <br />in the subsoil of Mexicali valley. If, on the contrary, as <br />we hope, by greater preparation of our farmers the coefficiept <br />of irrigation diminishes, it will be practically possible to <br />irrigate the whole of the 200,000 net hectares (494,200 acres) <br />existing with the volume guaranteed by the Treaty. <br /> <br />It is necessary to note that as Mexico did not have any <br />place to regulate the waters of the Colorado River in order <br />to distribute them day by day, during each year, according <br />to the needs of irrigation, it was necessary to arrange by <br />means of the Treaty for the United States to deliver that <br />water to us regulated to our wishes within certain limitations <br />which do not impose on us any sacrifice for any plan of culti- <br />vation that is followed in Mexicali Valley. For this service <br />of regulation of that water, our country does not have to pay <br />a single cent. Besides that, on account of the topographical <br />conditions of the lands to be irrigated on both banks of the <br />Colorado River, it was necessary to arrange that the water <br />of the Colorado River be delivered to us when desired by <br />Mexico, compatible with the needs of the lands to be irrigated <br />at three different points: <br /> <br />l. At Pilot Knob in order to irrigate the high lands which <br />are found adjacent to the Colorado River on its right <br />bank. <br /> <br />2. At San Luis Sonora in order to irrigate the highlands <br />which are found on the left bank of the Colorado River. <br /> <br />3. At the Colorado River in order that by means of the con- <br />struction of an international dam at the site where <br />Mexico may desire it, the rest of the lands on both banks <br />of the river can be irrigated. <br /> <br />Mexico even has the possibility, if it so desires, of <br />obtaining construction by Arizona of a canal which would carry <br />water of the Colorado River from a diversion dam constructed <br />on the section of the river bounding the lands of Sonora. <br /> <br />These are the advantages obtained by the Treaty which <br />cannot be relegated to a second place, but which for our <br />country have a fundamental importance because if it were not <br />for them we would not be able even to use the annual volume <br />that the Treaty assigns to Mexico. <br /> <br />Information Bulletin #18 <br /> <br />-l4- <br /> <br />January l2, 196~ <br /> <br />~~ <br />