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<br />.: ;~,~~ <br /> <br /><::> <br />o <br />w <br />o <br />- <br />- <br /> <br />CHAPTER 1 <br /> <br />INTRODUCTION <br /> <br />Because of certain provisions of the Arkansas <br /> <br />River Compact, the historic operation of the irrigation <br /> <br />features of John Martin Reservoir has been inefficient, <br /> <br />and the reservoir is often empty well before the end of <br /> <br />the irrigation season. The compact provides that <br /> <br />releases can be made at maximum irrigation rates whether <br /> <br />or not there is a sufficient amount of water in storage <br /> <br />and without regard to the actual requirements of the <br /> <br />users. The result of this kind of operation is that <br /> <br />during almost half of the years, in the study period <br /> <br />1949-71, the storage was depleted by the end of April. <br /> <br />which is the month that the irrigation season begins <br /> <br />and when the irrigation requirements are lowest. The <br /> <br />efficiency of the operation can be improved by the <br /> <br />adoption of an operational plan in which the maximum <br /> <br />releases that are permitted are a function of the <br /> <br />irrigation requirements. <br />