FLOOD07100 - Laserfiche WebLink

Home Browse Search

valley and terminated in a canyon with little or no channel storage. The flood reached the canYDn station at 8:15 p.m" on 30 May and destroyed the gage recorder, but frDm high water marks the peak discharge was estimated at 10,200 c.f.s. The Fort Collins Ex- press-Courier, 1 June 1930, states that the storm, which extended into the upper basin of the Cache la Poudre River, was not sufficient tD increase materially the flow upstream from the mouth of the North Fork, That flow was about 2,000 c.f.s., indicating that the flood peak on the North Fork was about 8,000 c.f.s. No definite information regarding the duration of the flood is available, but the flood reached Fort Collins, 12 miles downstream, about 10 p,m, and lasted only 2 hours. The chief damage of the flDOd was wrought on bridges, highways, and irrigatiDn canal head gates upstream from Fort Collins, The river, althDugh bankfull, did not overflow its channel in Fort Collins, . Flood of August 1951. During the afternoon and night Df 3 August 1951, a heavy rainstDrm occurred over the frDnt range and foothills from Boulder to Fort Collins. Approximately 12 inches of rainfall occurred near Bellvue. A severe flDOd resulted on the Cache la Poudre River and Dn its tributary Dry Creek, The flood peak on the Cache la Poudre River at a point 4 miles upstream from the mouth of Dry Creek occurred at 9:50 p.m. on 3 August at an estimated 4,910 c.f.s. dis- charge. A peak of 12,000 c.f.s. was estimated at Laporte, about 2 miles downstream from the confluence with Dry Creek. A crest of 3,700 c.f.s. was reached at 3 p,m. on 5 August at Greeley. On the main stem, large areas of cropland were inundated as well as numerDUS hDuses and farm buildings. Damage resulted to numerous irrigation dams, headworks, and canals. At Fort Collins, runDff from a small draw flooded a portion Df Colorado State College and a 10-block area of Fort Collins. 22 .