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2-6Junel921 This storm produced general rains over the Soutn Platte basin wIth the greatest amounts along the foothills. It covered an area of aporoxim<ltely 52Q square miles and lasted 5 days. Themax. imum recorded rainfall was 5.29 Inches and the greatest recorded rainfall intensltywas4.3lnchos In six hours at Longmont. This flood was produced by a combination of raInfall and snowmelt. Although this storm caused overbank flooding neither discharges nor damages were recorded. centers was in the Left-Hand Creek near the town of Nlwot. At this storm center, total precipitation was unOfficIally reported to hllve been over 6 InChes. The runoff from this storm caused floodIng on St. Vraln Creek and on It's tributaries, Dry Creek and Left-~and Creek. Overbank flows occurred along mast of the length of Left~ Hand Creek. Bridges, roads, crops, and Irrigation structures were damaged. 3 September 193B During this storm, showers were general Over the Left-Hand Creek basin accompanied by isolated cloud bursts along the foothil Is and the lower elevations. A maximum peak discharge of 812 CUbic feet per second was recorded at the U.S. Highway 287 gaging station near Longmant. This gaging station waS not In operatIon during the 1949 and 1951 floods. 4 Junll 1949 On 4 June 1949, the Left-Hand Creek had overbank flooding as a result of heavy and prolonged rainfall during late May and early June and the runoff from ~n unusually heavy snow blanket. The pro~ longed hlg~ 'iow ~n Left.H~nd Creek caused ~Ino~ 1~~~ges +0 Irrigation headworks, bridges, and farmlands. rf,lcorded a poak diSCharge of 1,140 floodperloo. The gaging station near Boulder cubic feet per second during the 3 Auqust 1951 During the afternoon and night of 3 August, a heavy rain- storm occurred over the frontal range and foothills east of the Con- tinental DivIde from tho vicinity of Uoulder to near fort Collins, Colorado, a distance of approximately 50 miles. One of the storm " "