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<br />To allol'l for non-recoverable retllrn flo'll et the 1011"81' line <br /> <br />of the 2roJ0Ct, the~e umount6 were increa~ed to 150 and 200 <br />811cond-feet respectively. <br /> <br />As temper~~~re and s011 conditione very from year <br /> <br />to year, it flOC necessary to 'letermine the time at wilich <br /> <br />the above demands would begin. As no diversion recol~e <br /> <br />.ere available for 'Ule leurs 1921 to 1924, the date W&s <br /> <br />deterlllined al! that d>::te before which incN8e:ini tempera- <br />tures hed been 8uffioient to warm the 80il ~nd et&rt plant <br />growth. The date wus taken later than -thia point in some <br />yeerB beceuse of rein.full. Tlle date of bel!.illliina of ir- <br />rigation was determined from actual diversion records for <br /> <br />the years 1932 snd 1936, except for 1934, when w!Ilperntl.lre <br /> <br />and moisture oonditions indio~ted that irrigation began <br /> <br />prior to the first recorded diversions. Fallo.ing is 8 <br />year by yeor dlecueuiou of ~. fsctaro determin1n~ the <br />date on whiah irl'igation began! <br /> <br />1921.1 l'el7ltMlrfltUl'"" recorilll 61;. Durango inU1cate <br /> <br />that conditionn became fllvorllble ObOl!t billY 1, belt duo to <br /> <br />eol.d periods frolll the i,tl1 ta the 12th "od from tile 19th <br />to the 27th, und to ncelillive rtlD.OU~ bot!'! ebove 8Dti. below <br /> <br />Mancos, during the ontire lllonth, the floVl at the resurvoir <br /> <br />diversions Watl l~ storable till June 1, after which dote, <br />a full irr1getioll supply WIlIl needed Ilt the gage. <br /> <br />~ <br />t':J <br />o <br />,;;.. <br /> <br />48 <br />