Laserfiche WebLink
<br />flOOD HISTORIES <br /> <br />HISTOR!C STORMS <br /> <br />The storms of May 1948 and May 1957 ove~ the Sand C~eek basin ill~a- <br /> <br />Si1lce 1896, eight lIlIlJO~ fl00da h <br />ave occurrod on Sand Cree~. Th <br />floOdIl Decurred in 1896 1912 elle <br />, ,1917,l92l,1933,1938,1948at:ldl957. <br />The average interval bet~ee~ <br />., major floOda haa b <br />een eight years, ~ith <br /> <br />trate the relation9hip of atorm ~ainfall to flooding potentials. <br /> <br />On 30 l'.ay 1948, a violent ~ainatorm centered over the Sand Creek <br /> <br />recurrence ranging fr~ four <br /> <br />A 8i~ilar violent rainstorm occurred over the Sand Creek ballio on <br /> <br />to Welve years, <br />OnCherrYCrek <br />e lIlflJor flOOds Occurred io II",. <br />1~, 1876, 1885, 1912, <br />The shortellt interval bet~een <br />IIlsJortlOOda "sa Woyesrs, <br />"ith an everage interval Of , <br />Ourteen years. Th " <br />e ood of 14 July 1912 <br />resulted from s ViOlent rainatorrn <br />lasttngt"ohoCll'S, dL.U'ing"hichrainfall <br />of 2.08 inChes "88 recorded. <br />The pattern Of thia ato~ caused <br />effect On rwaoff "hi h 8 c~ulative <br />c "aa near the maximum for a.lltorrn <br />of this intensity, <br /> <br />1933 Ilo.d 1935, <br /> <br />"8terahed, yielded up to 8 inches of rain in four hours at its center. <br /> <br />The rUIlofr frOlll thi....torm cauaedpeakdischarges on Sand Creek of <br /> <br />7,720 cubic feet per second at East Colfa~ Aven~e, snd 10,500 cubic feet <br /> <br />per second at the 1Il0uth. Flooding occurred from Colfa~ Avenue to the <br /> <br />mouth,"ithoverbankstag..SrllngingfroIll4t08feet. Theestimated <br /> <br />flood damage.. totaled $133,000. <br /> <br />the 8th and 9th of May 1957. Runoff fro", rainfllll centers up to 4.75 <br /> <br />1nchell "eulled flooding diechergea on Sand Creek of 25,000 cubic feet per <br /> <br />second at Yosemite Street and 10,500 cubic feet per second On Tbll Gate <br /> <br />Creek near East 6th Avenue. '.this flood caused higb...r stream stages than <br /> <br />in 1948 aud caused damage.. estimated at $338,000. <br /> <br />5 <br /> <br />6 <br />