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e. Price River at Woodside. Utah - GS number - 09314500. The gauge has <br />been in operation from 1909-1910, and from 1946-1992. The gauge is reflective <br />of the runoff from 1540 square miles above the gauge. The average annual runoff <br />past the gauge is 89,090 acre-feet. <br />The records at the gauge are generally fair. The natural flow of river is affected by <br />a storage reservoir, and diversions for 18,000 acres above the gauge. Schofield <br />Reservoir, built in 1926, has 65,780 acre-feet of storage in the basin. The <br />reservoir has an impact on the larger peak flows. <br />The annual peak flows vary from a high flow of 11,200 ft3/s on September 7, <br />1991, to the lowest annual peak of 300 ft3/s on April 19, 1974. The earliest time <br />that the peak flow has occurred during any water year is March 6th (1910). The <br />latest the peak flow has occurred is September 22nd (1962). In general, the peak <br />rate of runoff occurs as the result of reservoir releases in the late summer months. <br />Table 9 summarizes the recorded regulated flows for the Price River at Woodside, <br />Utah, used in the analysis. Table 10 summarizes the results of entering the yearly <br />peak flows for the period into the FREQY computer model, and letting the model <br />compute natural recurrence level flood peaks following the log Pearson Type III <br />methodology, and guidelines in Technical Bulletin 17B. <br />Figure 5 shows the peak regulated frequency for the Price River at Woodside, <br />Utah. <br />22