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<br />SAMPLE COMPUTATIONS <br /> <br />To illustrate the use of the curves and tables, solutions are <br /> <br />-, <br /> <br />shown of problems that might arise in the conjunctive administration <br /> <br />of ground water and surface water. <br /> <br />Problem I <br /> <br />If administrative criteria require that pumping cease when the <br /> <br />rate of stream depletion by pumping reaches 0.14 acre-ft/day: <br /> <br />(1) Under this restriction how long can a well \ mile from the stream <br /> <br />be pumped at the rate of 2 acre-ft/day if l/!i is lCf gal/day-ft, and <br /> <br />what is the volume of stream depletion during this time? (2) If <br /> <br />pumping this well is stopped when q = 0.14 acre-ft/day, what will the <br />- <br /> <br />rate of stream depletion be 30 days later? What will be the volume <br /> <br />of stream depletion at that time? (3) What will be the largest <br /> <br />rate of stream depletion and when will it occur? <br /> <br />sdf <br /> <br />a <br />= aa SiT =.....k./ = <br />--- TS <br />- - <br /> <br />(lcf <br /> <br />('Ii mOa (5280 ft/mi)" <br />gal/day-ft) (1 fe /7 .48 gal) <br /> <br />= 520 days. <br /> <br />./o~ <br />S' <br /> <br />20 <br />