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<br />. <br /> <br />SYNOPSIS AND CONCLUSIONS <br /> <br />, <br /> <br />Mancos River is the most westerly perennial tributary <br /> <br />of San Juan River, 2nd irrigates the J~ncos Valley, on the west <br /> <br />slope of the La Plata Mountains. The river is formed by three <br /> <br />principal forks, West, Middle and East Mancos Rivers, all <br /> <br />characterized by early spring flooes lasting about 40 dqys during <br /> <br /> <br />the period April to June. The summer flow is sustained by the <br /> <br /> <br />immediate response to summer rains in the mountains, which <br /> <br /> <br />usually increase flows for several days. The supply during late <br /> <br />summer usually 1s inadequate for the area now irrigated. <br /> <br />The project lands lie st altitudes of 6,400 to 7,200 <br />feet with an average of 7,000 feet. The climate 1s similar to <br /> <br />that of Glenwood Springs in Western Colorado or of Fort Collins <br /> <br />in Eastern Colorad.o. The soil ,,1 though heavy in most. places, <br /> <br />and seldam unGGrlain with gravel, lies on slopes that produce <br /> <br />good drainage, and seepage will not be serious. <br /> <br />The basic industry is livestock, ranged on the Montezuma <br /> <br />National Forest in sU~"",er. TLe principal crops h~ve been forage <br /> <br />for winter feeding, with considerable sn~ll grain as a variant. <br /> <br />Only a lir:lited area of raw crops and cash crops h~s been possible <br /> <br />because of lack of late water. <br /> <br />The ~~ncos Public Irrigation District, organized under <br /> <br />the Act of 1935 cont'1ins t.he project and other lands as follows: <br /> <br />. <br /> <br />?'3~ i <br /> <br />A <br />