<br />'l'HE FLOOD AT PUEBLO.
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<br />
<br />'rHE FLOOD BETWJoJEN CANON CITY AND PUEBLO,
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<br />From Canoll City to Florence, a t1iistanc(\ of i) miles by riyer, Lilt'
<br />valley is comparatively ~arrow and was little <lamuged by the Jlood,
<br />The maximum discharge increased from :3,740 second-feet at CanOl}
<br />City to 9,000 second-feet at Florence.8 The tributary streams in thic
<br />section-Oil, Chundler, Sixmile, Oak, and Coal creeks-lie partly
<br />within the upper of the two areas of intense rainfaH but did not havc
<br />as high unit discharges as the tributaries nearer Pueblo. (See table
<br />of maximum discharge, pp. 21-22.)
<br />Between Florence and the mouth of Bea,ver Creek, a distanee of
<br />10 miles, the discharge must have ,increased considerably, as the
<br />principal tributaries, Eig-htmile, Brush Hollow, and Hard?crabble
<br />creeks, had their flood crests between 7.30 and 8.30 p. m. on .Junc :3,
<br />about the time the river was highest at Florence. At Portla]](l, :>
<br />miles below Florence, the highest water occurred at 11 p. m" when
<br />the water was 4 feet (1eep in the Denver &: Rio Grande Railroad
<br />station., The water started to fall here at 11..30 p. m. and in an hOlll'
<br />had fallen 3t feet.
<br />From Beaver Creek to Turkey Creek, a distance of 11 miles, th(\
<br />maximum stage during the evening of .June 3 could not have in~
<br />creased very greatly, as the tributary streams, Rush and Red creek;
<br />and Ritchie and Fred Rohr gulches, 'nad their floor1 crests about .5
<br />p. m., several hours before the passage of the main flood crest in thr.
<br />river. In this stretch the gTeatest damage was cansed not by the
<br />flood of June 3 but by that of June 5 due to the failure of the
<br />Schaeffer reservoir on Beaver Creek (p. 17). (See PI. V, E.)
<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 from the areas of intpnse l'ainfnll.
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<br />THE FI~OOD AT I'UEBI,O.
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<br />GENERAL Jo'EATURES.
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<br />Pueblo, .the second city in size in the State, is on .Arkansas River
<br />a few miles east of the foothill region and just above the mouth of
<br />.. Fountain Creek. The 1920 census gave its population as 42,008, It
<br />is an important railroad center, being on the lines of the Atchison,
<br />Topeka & Santa Fe, Denver & Rio Grande V\T estern, Missouri
<br />Pacific, and Colorado l~ Southern railways. It is also an important
<br />m:umfacturing center, the steel mills, smelters, r'ailroad car shops,
<br />
<br />. F,n!tln~prs of the Deny~r & Rio Grande Railroad Co, measur'ed a cross section of tIll'
<br />rivpr :JOO feet below Pikes P~nk Ay~nlle bridgennd Rlso measured the slope from a point
<br />1,100 ff'('t upstream fo n point 1,100 feet downstream. The slope was found to be 0.003],
<br />awl the dischnrg{' was comrHltf'd as 9.000 sf'conrl~fpfl,t
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