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<br />about 10:00 P.M. and lasted approximately two hours. Most of the damage occurred to <br />highways. bridges, and irrigation structures upstream. <br /> <br />'" <br /> <br />Flood of 19-23 June 1947. Heavy rains. including 2.7 inches in 1.5 hours at Windsor <br />on 20 June. and metting snow once more caused the Cache la Poudre River to overflow <br />in the Greeley area. Damages were about evenly divided between urban and rural areas. <br />An estimated 200 inhab~ants of 100 homes in the floodplain were evacuated. A dike on <br />north 9th Avenue broke early on the 23m resutting in flooding of a residential area there. <br />No bridges were destroyed atthough a number were closed to traffic during the flooding. <br />It was reported that about 170 acres were flooded in Greeley. Damages were suffered to <br />irrigation structures upstream of Greeley. <br /> <br />J <br /> <br />Flood Of 3-4 Auaust 1951. A heavy rainstorm over the Rocky Mountain foothills on <br />3 August 1951, w~h nearly 12 inches measured near Bellevue. Colorado in the Cache la <br />Poudre -River basin, caused severe flooding along that stream. No damages were <br />reported in the study reach and accounts of the Flood indicate that the Fort Collins area <br />was not affected. <br /> <br />Flood of June 1965. Heavy to torrential rainfall over large portions of the South Platte <br />River basin w~h the Cache la Poudre River basin receiving ~s greatest amounts on 14 and <br />15 June caused flooding throughout the study reach. Flood damage at Greeley was <br />estimated at 885,000. Rural damages were about $700.000 for the Cache la Poudre River <br />basin including the study reach. The Greeley Tribune of 17 June 1965 reported: <br />"The Cache la Poudre was spreading out into the lowlands north and east of Greeley <br />. c . Police were forced to close the 6th Avenue bridge and the 5th Street bridge. c . At 5th <br />Street. water was spilling out of the banks to the east on the north side of the bridge. <br /> <br />4.1.14 KIOWA CREEK <br /> <br />Flood Historv. Floods in the Kiowa Creek basin are caused by runoff from intense <br />thunderstorm rainfall. Knowledge of historical floods is lim~ed to three major events. <br />These events are discussed below. <br /> <br />. <br /> <br />Flood of 21 Mav 1878. No precip~ation or discharge estimates are available for this <br />floodc However, data presented in the United States Geological Survey Water Supply <br />Paper No. 997, ent~led "Floods in Colorado" indicates that a substantial flood did occur. <br />The above publication reprinted the following article taken from the Colorado Magazine of <br />July 1937: "Among the unsolved mysteries in Colorado's history is the disappearance <br />of a standard gage Kansas PacWic (now Union PacWic) locomotive in the quicksands of <br />Kiowa Creek on the night of May 21 . 1878. A sudden flood had destroyed the wooden <br />bridge that crossed the usually dry channel a short time before a freight train was due. and <br />owing to the bridge being the low point of a sag in the roadbed and (to) the high speed of <br />the train. the engine and most of the cars plunged into a swirling torrent of water before <br />the engineer realized the s~uation. The engineer. fireman, and brakeman went down w~h <br /> <br />- <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />4.21 <br /> <br />a:w=r <br />