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<br />TABLE 4 <br /> <br />HIGHEST TEN RECORDED FLOWS IN ORDER OF MAGNITUDE <br /> <br />FOUNTAIN CREEK IN PUEBLO. COLORADO <br /> <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br /> <br /> Estimated <br /> GaQ8 Hlliahts Peak <br />Date of Crest Staae Elevation Discharqe <br /> feet feet c~f.s. <br />June 17, 1965 19.00 4,682.5 4?,00D <br />May 3D, 1935 * 35,000* <br />June 4, 1921 * 3(1,000* <br />July 10, 1945 9.50 4,673.0 17 , 8 DO <br />Aug. 26, 1946 9.00 4,672.5 IG,500 <br />Aug. 4, 1944 8.51 4,672.0 12,900 <br />Oct. 3, 1923 5.80 12,000 <br />Aug. 23, 1946 8.00 L,,671.5 11,800 <br />July 30,1951 7.95 L,,671.4 U,600 <br />Aug. 6, 1955 7.90 4,671.4 U,50D <br /> <br />Order <br />Number <br /> <br />*Gage Was not used to make meas~rements; 35,000 and 34,000 c.f.s. <br />ars slope-area measurements. <br /> <br />Flood Occurrences <br /> <br /> Analysis of climatological data and in"pection <br />of the flood history for the Arkansas River subbasin above John <br />Martin Dam show that the most S~ver8 flood-producing storms occur <br />during the late spring or summe~ months. The spring season is the <br /> <br />transitional period between the occurrence of instability and fron- <br /> <br /> <br />tal activity and is subject to storms caused by both types of aC- <br /> <br /> <br />tivities or a combination thereof. Also, the movement and interac- <br /> <br /> <br />tion between airmasses during these seasons are more pronounced. <br /> <br /> <br />This may result in heavy spring snow storms in the higher elevations <br /> <br /> <br />or in high intensity rains during the spring. These storms and the <br /> <br /> <br />physical features of the watershed can produce the rapid concen- <br /> <br />tration of runoff that characterizes flash floods of high peak <br /> <br /> <br />flows, small volumes, and short durations. <br /> <br />22 <br />