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Since no gauging equipment is in place on the draw, these <br />• valves for flow are just estimates. However, they <br />probably represent with reasonable accuracy, especially in <br />latter years, the spring flow in the Draw. The water right <br />associated with this diversion is rather junior, and <br />consequently, the ditch is normally shut off after the <br />I spring runoff. Flows in the Draw probably decline <br />through the summer and eventually disappear in the fall and <br />winter. <br />Although two surface water monitoring facilities are being <br />installed, as later described, to monitor flows on the <br />90-acre tract, none have historically been in place. The <br />ephemeral stream crossing the southeast corner of the <br />• lease drains an area of approximately 1.7 sq.miles. <br />Utilizing the techniques developed by McCain and Janett <br />(1976), we estimate flood discharges of this stream at the <br />east boundary resulting from various precipitation events <br />to be as described on Table III. <br />Table III <br /> <br />Maximum Discharges at East Lease Boundary <br />Resulting from 10, 50 and 100 Year Storms <br />Frequency of <br />Precipitation Event <br />10 yr. storm <br />Estimated Maximum <br />Discharge <br />8.35 cfs <br />50 yr. storm <br />100 yr, storm <br />19.P1 Cfs <br />26.51 cfs <br />15 <br />