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K] <br />032 <br />Results <br />Through this change in water use, a permanent pool is maintained in <br />John Martin Reservoir. A graph of the contents of the permanent pool is <br />FIG. <br />•., shown in figure 1. The pool, which initially contains 10,000 acre -feet <br />jnmr Aaron <br />(1.2X10 m reaches a minimum of 7,600 acre -feet (9.4x10 m in the <br />.winter of 1956 -57, reaches a maximum of 13,800 acre -feet (1.7X10 m in <br />the summer of 1966, and has 11,200 acre -feet (1.4x10 m in it at the <br />end of the simulation period. The mean storage in the pool is 10,900 <br />acre -feet (1.3x10 m and the standard deviation is 1,300 acre -feet <br />(1.6x10 6 m 3 ). A simulation starting with no initial water in the <br />permanent pool indicates that it would take 2 or 3 years to initially <br />fill the pool under normal conditions. <br />The impact of this change in water use on other water users in the <br />Arkansas River valley system was measured by comparing surface -water <br />diversions by canal, State -line flow, and ground -water storage under <br />normal operation and under the transfer plan. <br />14 <br />