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<br />peak-discharge on Bear Creek at Morrison was 1 ,030 cfs on 25 July. <br /> <br />I. <br /> <br />Flood of 4-8 May 1969. Heavy rains from 4 through 8 May 1969 resulted in flooding <br />in the Bear Creek basin with the most damage downstream from Morrison, The weather <br />station at Morrison reported a total storm rainfall of 11.27 inches, with a maximum daily <br />amount of 5.77 inches, Unofficial rainfall amounts in the basin varied from 6.7 inches to <br />11.8 inches during the storm period of 5 days. The peak flows for Bear Creek at Morrison <br />was 2,340 cfs on 7 May. <br /> <br />i. <br /> <br />4.14 LITTLE DRY CREEK BASINS <br /> <br />Flood Historv. Descriptions of two floods occurring on Little Dry Creek in Arapahoe <br />County are representative of the effects of severe stonns in an area of extensive urban <br />development. The September 1933 flood is an example of a severe stonn extending over <br />several watersheds. This storm affected Little Dry Creek, Big Dry Creek, Plum Creek, and <br />Cherry Creek. The simultaneous flooding of these four streams was the primary cause of <br />flooding on the South Platte River. <br /> <br />Flood of 10 September 1933. Heavy rains of cloudburst proportions centered over the <br />Little Dry Creek basin and resulted in the greatest flood of record. The estimated <br />discharge of the stream during the flood was 10,000 cubic feet per second. Water rose <br />in the residences as much as 3 feet above their first-floors. Heavy damages also were <br />Inflicted on business establishments and utilities in Englewood with some of the business <br />buildings moved off their foundations by the high velocities. Floodwaters extended from <br />two blocks north to a half block south of the channel throughout its course through the <br />urban area. Almost all of the street and highway bridges in Englewood were severely <br />damaged and the total loss was estimated at approximately $180,000. EngleWood Darn <br />was later constructed on this stream, but a storm of this magnitude would still cause <br />serious flooding. <br /> <br />Flood of 3 August 1956. A series of storms between 30 July and 3 August over the <br />Denver area, including the Little Dry Creek basin culminated in more than 12 inches of rain <br />being reported, for the period, in Englewood and the surrounding areas. Debrls-blocked <br />channels forced Little Dry Creek out of bank at several locations in Englewood and <br />discharges exceeded channel capacity below the town, flooding lowland areas. The peak <br />discharge through town was limited to 1,000 cubic feet per second by operation of the <br />Englewood Dam 9 miles upstream, Floodwaters inundated South University Boulevard <br />and Bellevue Road, Debris blocked the bridges forcing the water over the roads. The <br />bridge at Girard Avenue and Bannock Street - since replaced by a conduit had damage <br />to its approaches. A small golf course near Santa Fe Drive had an estimated damage <br />of $3,000. Flood damages were caused in Englewood by sidehill runoff as well as <br />overflows of Lillie Dry Creek. Damages, including those incurred by sidehill runoff, were <br />greater than $30,000. Although the dollar damage of this flood can be considered minor, <br />it is apparent that a flood threat still exists along Little Dry Creek even with Englewood <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />4.21 <br /> <br />uw=r <br />