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<br />Flood of 24-26 June 1917. The flood of 1917, reported greatest near Greeley, was <br />caused by rain falling on a heavy snow blanket in the mountains and supplemented by <br />local rains in the lower portion of the basin, The county surveyor estimated a peak <br />discharge of 13,000 cubic feet per second near Greeley, but the peak at the Greeley gage <br />near the mouth of the stream was 4,240 cubic feet per second on 25 June, Total <br />damages for the basin were estimated at $19,000 with $3,000 at Greeley. <br /> <br />Flood of 10-18 June 1923. Snow cover in the basin was about 50 percent above <br />normal in the Spring of 1923 and June was one of the wettest of record. Flooding along <br />the Poudre caused $132,500 in total damages in the basin including $5,000 at Greeley. <br />The Fort Collins Express, 17 June 1923, in a dispatch from Greeley stated: <br />"The water on the Poudre second only to the flood of 1904, tonight shut off all travel <br />on highways north and west of the city and had driven a score of families from their homes <br />on the lowlands. . . Three feet of water has driven tourists from their campground in the <br />bottoms. The Boyd farm northwest of here was entirely under water for the first time since <br />1884". <br /> <br />Flood of May 1930. Rains began in the basin about 3 p.m on 30 May 1930 and a <br />peak discharge of 6,800 cubic feet per second, at a stage of 9.82 feet, was reached at <br />Livermore on the North Fori< the Cache la Poudre River at 6 p.m. The flood reached the <br />canyon gage in the Cache la Poudre River at 8:15 p.m., with an estimated discharge of <br />10,200 cubic feet per second at 7.9 feet gage height. The flood reached Fort Collins at <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 />Flood of 19-23 June 1947. Heavy rains, including 2.7 inches in 1.5 hours at Windsor <br />on 20 June, and melting snow once more caused the Cache Ia Poudre River to overflow <br />in the Greeley area. Damages were about evenly divided between urban and rural areas. <br />An estimated 200 inhabitants of 100 homes in the floodplain were evacuated. A dike on <br />north 9th Avenue broke early on the 23rd resulting in flooding of a residential area there. <br />No bridges were destroyed although 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 />Flood Of 3-4 August 1951. A heavy rainstorm over the Rocky Mountain foothills on <br />3 August 1951, with nearly 12 inches measured near Bellevue, Colorado in the Cache ia <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 with the Cache la Poudre River basin receiving its 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 />, , . Police were forced to close the 6th Avenue bridge and the 5th Street bridge, , , At 5th <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />4.7 <br /> <br />fFIJFT <br />