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<br />OC~,QJ3 <br /> <br />proposed to be then direotly benefited upon the tax rolla, and the ..as...- <br />mont will thenoeforth be colleoted by the tax oolleotion 1l'ILbh1ne1'7 ot the <br />various counti... <br /> <br />4. The San Lub Valley Projeot is planned to supplement the pre.ent <br />....ter 8upply tor 456.000 acres of irrigated land. located in the San Lute <br />Valley of the upper Rio Grande Basin. lio DeW land. or lands not now havlns <br />a partial ....ter auW1y will be inoluded. lands to be inoluded are nCI'W <br />88rved by numerous oanals and ditohe., whioh will alao 8erTe as dhtrlbutor. <br />for 8up'plelD8Dtal water. Theae oanale and dl tah.. under 'Various forms of <br />organhatlonl haTe dearees and .tor rights to the natural 1"10. of the <br />streams that vary materially one trom another .s to diver. taus priority <br />and to quantity ot water they r:ay obtain, ..)dill it desirable to turnilh <br />vary1~ quantitlu of the supplemental water .uvply to the land., depend_ <br />in<< upon the nature at their exh'tinc water right. to the mtunl flaw. <br />Neither the GanrlUJll:llnt nor the Comern.noy D18triots will haTe any direot <br />.control_ Dr_author.1.ty_over_the... DUJDII:roua_dl'tohea ._..la_planned. -t.he--a\lople- <br />_mal _ter supply will be delinred by the Gonrnment and Consenanoy <br />Districts to the .treams above all canal heading.. and trO!l that point: <br />on, distribution will be under authority ot the State and ditoh oompanies <br />to the water uaer. <br /> <br />l, <br /> <br />5. The pro.ant ap-lcultural econom;y in the Su Luia Vaney ot Colo- <br />rado haa beOO'Ill!l ..11 established within the last twenty-tiTe or thirty <br />years, and il the Nlult of Jr&ny years of "out and try" by the looal <br />tarmers. The basio pattern bas beo~ well etabilhed, altho12gh there <br />have been in.ignitioant minor variations from year to year. <br /> <br />II <br /> <br />When extensive irrisation waa first developed in the San Lul. <br />Valley, the agTlo121tural eoonomy wae oentered largely around the produo- <br />tion of cereal grains, prinoipally wheat and barley, ud of forage, largely <br />Dative hay, tor .'took teed. lfhen large-aoale irrigation was tint intro- <br />duoed Into the Valley, it waa largely a land promotional development. <br />SllYtt consideration was given to drainage, and the re.ult h well known. <br />The firat lands irrigated were the heavier soils near or adjaosnt to the <br />trough of the Closed Baein. Aa theee lands, beoause of a laok of drainage, <br />gradually beoame aeeped and wanJl,liedw, the tarmer. .s,lowly ..,.."d 'their <br />farmin,; operations .stward and his:her on the Ilone 't-f' the Valley floor. <br />. <br />This oontinued '\"Irogreuively trem about 1885 to 1910. During 'thb period <br />praotioally an of the firat developed lande were abandoned and reverted <br />'to the Sute, and f'andng crpera'tione 1I'8re oentered IlOstl,. on land. whoe. <br />oharaoteristios were not nearly 10 good as those nearer the trough, but <br />whoae defioiencies were otr.ot by adequate natural underdraiDage. These <br />later developed land. .re f01md to be exee?ticmally ...11 luitsd tor <br />the produotion of oertain speoialbed orop" n&JI'l8ly pOtatoes and En!:lllh <br />peu. <br /> <br />As the farming moved westward on the Valley floor, the ground- <br />water table oontinusd to rise and within a ahort period was suffiohntly <br />near the ground surfaoe during the irrigation season to permit sub-surfaoe <br /> <br />-2- <br />