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<br />o <br /> <br />r~. ., <br /> <br />N <br />VJ <br />00 <br />~ <br /> <br />upt-Tard to heights of 10$000 to iliJoOO feet above sea leveL The scenic <br /> <br />beauty of this mountain backdrop is so outstanding that 405 square miles <br /> <br />of the Color~do Range east of Middle .Park were select.ed by the National <br /> <br />Park Service as a suitable location of Rocky Hount~.in Na.tional Park. <br /> <br />70 Granby DaIDj located in the northeastern portion of the Middle <br /> <br />Park Basin;l waS completed in 19500 It is ~bout 6 miles northeast of <br /> <br />Granby:> Coloradoo Granby Reservoir, which it creates,9 wa.s designed to <br /> <br />control the runoff of the Colorado Hi vel' and to store diversions from <br /> <br />~.,r'LJlow Creek and other strea.ms as well 0 It is the key unit in the Western <br /> <br />Slope collection system of the Colorado=Big Thompson Projecto <br /> <br />8" The Colorado River below Granby Dam is the primary subject of this <br /> <br />reporto The Colora.do River flows generally southwestward about 220 miles <br /> <br />before entering utahj and for more than half that distancej it is an ex- <br /> <br />cellent trout stream" However j) it is the 45=m:ile reach in Middle Pa.rkj <br /> <br />between Granby Dam and the head of' Gore Canyon near the town of Krennnling, <br /> <br />which would be most a.ffected by curta.ilment of f1.ows below Granby Dam" The <br /> <br />aerial mosaics$ Plates I through V' j) show the course of the Colorado River <br /> <br />in this reachj together with annotations as to highways,\) townslI resorts <br /> <br />and ranchesj stream gaging stationsj and so fortho <br /> <br />90 Between Granby Droll and Gore Canyonj. the river loses approximately <br /> <br />1,000 feet in altitude. Striking variations in vegetation and climatic <br /> <br />:.'" <br /> <br />conditions are closely associated with topography And elevationso There <br /> <br />is more forested area adjacent to the river along its upper reaches than <br /> <br />there is near Krermnlingj where arid vegetative and cli.-rnatic conditions <br /> <br />are prevalento <br /> <br />100 The river at times meanders at moderat.e gradient through rela- <br /> <br />tively ..:ide.9 flat bottom lands~ in other places it drops swiftly through <br /> <br />-3~ <br />