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<br />Flood of 1935, Rains of cloudburst intensity over the basins of the plains tributaries to <br />the South Platte River east of Denver occurred on 30-31 May following the wettest May <br />in Colorado in 48 years, It was reported that a 'veritable wall of water' appeared on Bijou <br />Creek about 4 miles upstream from its confluence with the South Platte River. The flood <br />crest reached Fort Morgan on 31 May and was reported to be 10 feet above flood stage <br />having a discharge of 84,300 cubic feet per second. Although the flood crest attenuated <br />rapidly downstream from Fort Morgan, the floodwater reached the Union Pacific Railroad <br />grade near Crook, Colorado. <br /> <br />Flood of 1938. H'3avy rainfall during the period from 30 August to 4 September over <br />much of the upper South Platte River basin caused flooding on many of the mountain <br />streams tributary to the South Platte as well as the South Platte itself. Relatively minor <br />flooding was reported on the South Platte River. <br /> <br />Flood of 1942. The flood of April-May on the South Platte River and tributary streams <br />was the result of snowmelt runoff being augmented by heavy precipitation during the last <br />half of April and the first part of May. The mountain area above Chatfield Dam produced <br />most of the volume that passed the Denver gage and, although peak values during this <br />flood were not high in comparison to other floods, the volume of runoff was excessive, with <br />a 3D-day runoff of 265,000 acre-feet flowing past the Denver gage and a 60-day runoff of <br />395,000 acre-feel. Four separate flood crests occurred at the Denver gage with the <br />maximum peak of 10,200 cubic feet per second recorded on 25 April. Peak flows' in <br />excess of 8,500 cubit: feet per second were, however, recorded on 19, 23 and 30 April. <br />The minimum flow at Denver during the 24 day period-from 19 April to 13 May was about <br />4,500 cubic feet per ~;econd. <br /> <br />Flood of 1948. Heavy rainfall over a large area east of Denver caused flooding in late <br />May and early June on the South Platte River between Sand Creek and Fort Lupton. <br />Several approaches ItO county bridges were washed out as well as flooding of some <br />agricultural tand. <br /> <br />Flood of 1949. Heavy rainfall over a melting snowpack caused flooding on the South <br />Plalte River from mid-May to late June from Littleton, Colorado to North Platte, Nebraska. <br />Considerable damage was incurred by homes, farm buildings, and crops along that reach <br />of the river. <br /> <br />Flood of 1957. Intl3nse local rains over the Sand Creek basin caused flOOding on the <br />South Platte River for a distance downstream from Sand Creek, High rural damages were <br />incurred in some locations. <br /> <br />Flood of 1965. Heavy to torrential rainfall over large portions of the South Platte River <br />basin created extensive flooding along the South Platte River. Heavy rainfall occurred over <br />portions of the northern sections of the South Platte River basin on the 14th and 15th of <br />June. As. the storm system moved southward, torrential rainfall of the period extended <br />over some 3,000 square miles of the South Platte 'River basin, including the Plum Creek, <br />Cherry Creek, and Sand and Toll Gate Creek watersheds in the Denver region, and the <br />Bijou Creek, Kiowa Creek, Commanche Creek, Bader Creek, and Beaver Creek <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />4,2 <br /> <br />fFIFf <br />