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<br />THE FLOOD AT PUEBLO;
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<br />2:1
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<br />THE FLOOD ,BETWEEN CANON CITY AND PUEBLO,
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<br />From Canon Ci~y to Florence" a c.listnnee of ~ miles by river, the
<br />valley is cOI?paratlvely ~arrow and WlIS little damaged by the floOll.
<br />The maximum, discharge increased from 3,740 second-feet at Canon
<br />City to 9,000 second-reet at Florence.s The tributary streams in this
<br />section':-OiI, (''handler, Sixmile, Oak, and Coal creeks-lie partly
<br />within the upper of the two arellS or intense rainfall but did not have
<br />as high unit discharges as the tributaries nearer Pueblo. (See tahle
<br />or maximum discharge, pp. 21-22.)
<br />Between Florence and the mouth or Beaver. Creek, a distance or
<br />10 miles, tqe'discharge must have ,increased considerably, as the
<br />principal tributaries, Eig-htmile, Brush Hollow, and Hardscrabble
<br />creeks, had their flood crests between 7.30 a'nd 8.30 p. m. on' .June 13,
<br />nbout the time the river was highest at Florence. At Portlaml, !l
<br />miles below Florence, the highest wnter occurred nt 11 p. m., when
<br />the water was 4 reet deep in the Dem'er &: Rio Grande RI1.ilroad
<br />station., The water started to rnll here at 11.30 p. m. and in an hour
<br />had fallen 3i reet.
<br />From Beaver Creek to Turkey Creek, n distnnce or 11. miles; the
<br />maximum stage during- the eveninA' of.Tune a could not have in-
<br />creased very greatly, as the tributary streams, Rush and Red creeks
<br />and Ritchie and Fred Rohr gulches, had their flood crests about 5
<br />p. m., severn I hours.before the passage of the main flood crest in the
<br />river. In this stretch the greatest damage ,vas cnusecl not by the
<br />flood or June 3 but by that of June 5 due to the railure of the
<br />Schaeffer reservoir on Beaver Creek (p. 17). (See PI. V, B.)
<br />Between Turkey Creek and Pueblo the discharge of. the river in-
<br />creased very rapidly, as this ,was the section which received the maxi-
<br />mum run-off rrom the nrens of intense rninfall.
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<br />THE FLOOD. AT PUEBLO,
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<br />OEN}]RAL' FEATURES. .
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<br />Pueblo,~he second city in size in the State, is on Arkansas River
<br />a rew miles east of the foothill region and just above the mouth or
<br />Fountain Creek. The 1920 census gave its population as 42,908. It
<br />is an important railroad center, being on the lines 'of the Atchison,
<br />Topeka & Santa Fe, Denver & Rio Grande Western, Missouri
<br />Pacific, and Colorado & Southern railways. It is also an important
<br />manufacturing center, the steel mills, smelters, r'ailroad car shops,
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<br />· F.nl:lne~rs of the Denver & Rio Grande Railroad Co.. measur"ed a cross section of the
<br />river :100 rPet below r1k.... Peak Avenue brIdge'and also measured the slope from a point
<br />1.100 fed upstrellm 10 a poInt 1,100 feet downstream. The Slope was fouudlo be 0,0031,
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