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<br />o <br /> <br />i'- <br /> <br />00 <br />C\l <br /> <br />0.1 tHuee is .520 f'.Jet higher. Although r .'lte of runoff should in- <br /> <br />crease with altitude it is assumec that the rate for the two areas <br /> <br />is the sa~e one their runoff directly proportional to the aroas, <br /> <br />which should be conservative. This diversion c3nal at 9,000 feet <br /> <br />elevation cannot be operated in winter nor in fact before SOQe date <br /> <br />in May. The flow of West Divice Creek is therefore taken as 6ivertible <br /> <br />only after May 10 of each year. <br /> <br />The SUI:t cf the total flow of Willow Creek and the estimated <br /> <br />flow of upper West Divide Creek after M~y 10, is storable in Haystack <br /> <br />Reservcir to the extent not n~eded for direct use during the irriga- <br /> <br />tion season. Frc'l'1 the scanty reccrd available at Willow Creek for <br /> <br />the non-irrigation season it is estimated that a BiniLlUTI of 1,000 <br /> <br />acre-feet of water is storable in Raystack Reservoir during this <br /> <br />seasC'n. <br /> <br />Plate 3 }Tesents the follovrrng data: <br /> <br />(a) For the years 1921 to 1937 (except 1922 and 1928) the <br /> <br />tot'll diversi'~ns by project can'lls, vrr th the v'3ry n()~inal r: iver- <br /> <br />sions by ditches outside the project shewn as the shaCed area at <br /> <br />;1 <br />~ <br />r, <br /> <br />the top cf the curve; in 1922 the diversion is fer West Divide, <br /> <br />Porter anc Highline Canals Gnly, while there is no recorc avail- <br /> <br />able for 1928; in ~ost years the anlounts for the early part of the <br /> <br />season are estiQ'1.tec from staterlents of c'.itch owners; fc'llcwing the <br /> <br />peak of the flood season the anount shown is the actual neasurement <br /> <br />mace at intervals of a few days. <br /> <br />43 <br />