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seek higher ground. Three large packing plants and practically all of the lower feeding pens at the Denver Union Stockyards were flooded. Ten acres of railroad yards were flooded to a depth of 1 foot (Reference 4). A severe storm centered over the Bayou Gulch basin, a tributary to Cherry Creek, during the afternoon of July 28, 1922. Heavy rain- fall was reported to have occurred in an area bounded by lines 3 miles north of Parker, 4 miles west of Cherry Creek, and 1 mile south of Franktown, and by the Douglas-Elbert County line on the east. Unofficial rainfall amounts varied from 1 inch to 3.5 inches and occurred in approximately 2 hours. An estimated peak flow of 8,700 cfs discharged out of Bayou Gulch. The discharge on Cherry Creek, 3 miles north of Parker, was estimated to be 17,000 cfs. Although no damage was experienced in Denver, this was con- sidered a major flood for the upstream part of the basin. The storm of August 2 and 3, 1933, occurred over a l75-square mile area upstream from Franktown. Unofficial rainfall amounts varied from 3 to 9 inches and occurred over a 9-hour period between 6 p.m. on August 2 and 3 a.m. on August 3. The most intense activ- ity of the storm occurred between 9 p.m. and 10 p.m. Waters in the then-existing Castlewood Dam and Reservoir reached the spill- way crest around 11 p.m. The inflow was estimated at 35,000 cfs. Water overtopped the crest of the dam and the structure failed at around 12 a.m. The sudden release of water caused a flood wave to move down the valley. The peak discharge is estimated to have ranged from 126,000 cfs downstream of the dam to approximately 16,500 cfs near the confluence with the South Platte River. The Cherry Creek Flood Commission estimated the damages to be approxi- mately $1 million; approximately $200,000 of this total occurred upstream from Denver. This flood caused additional economic damage in the Cherry Creek basin. Loss of the dam cut off the water 5upply to approximately 3,000 acres of land. The basin suffered a severe recession and many families moved from the area. On September 9 and 10, 1933, a flood was caused by heavy rain on the divide separating Cherry Creek from Plum, Big Dry, and Little Dry Creeks, which enter the South Platte River between the mouth of the South Platte River canyon and Denver. In an investigation of this flood, the office of the State Engineer made a slope-area determination of the flow in Plum Creek and found it to be 5,500 cfs. A large storm front moved into southeastern Colorado on August 25, 1945, and extended over the Cherry Creek basin. Unofficial rain- fall amounts varied from 2 to 5 inches. Severe flooding occurred along Cherry Creek in the Franktown-Parker area. The gaging sta- tion at Melvin recorded a peak discharge of 10,700 cts. Total damages were estimated at $200,000. 10