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<br />~ <br /> <br />. <br /> <br />, <br />::':\ <br />-:J <br /> <br />'. ~ <br /> <br />SOME FLOOD.S IN THE ROCKY MOUNTAIN REGION. <br /> <br />125 <br /> <br />Cloudbursts in the foothills above Golden, Colo., ooourred July <br />26, 1923, and caused floods in all the gulches that enter Clear Creek <br />from the north within 2 miles of Golden. At the mouth of Magpie <br />Gulch the rainfall was moderate, but half a mile above it was a <br />cloudburst. The ram began about 12.45 p. m" and the flood reached <br />its crest by 1 p. m. and then fell so rapidly that by 1.40 p. m. the <br />flow in the guloh was again normal. This flood deposited a gravel <br />and boulder dam 10 feet high entirely across Clear Creek, a distance <br />of about 70 feet, Some of the boulders moved by the flood weighed <br />as much as 5 tons. <br />The recording gage on Uncompahgre River at Ouray, Colo., <br />registered a severe flood on July 20, 1923, This flood was caused <br />by a cloudburst on SkYTocket Creek, which drains the almost vertical <br />walls of the mountains back of Ouray and enters the Uncompahgre <br />at the gag~. The hydrograph of the flood (fig, 9, A) Shows that the <br />discharge of the river increased from 275 to 2,000 second-feet in <br />about 30 minutes and fen almost as quiokly. <br />445960-25--9 <br /> <br />I <br /> <br />E.. <br />