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. estimated to be 8,000 cubic feet per second. The Toll Gate Creek discharge was estimated to be 10,500 cubic feet per second at East 6th Avenue in Aurora, which is about 2 miles upstream from the mouth of Toll Gate Creek. Peak discharge on the South Platte River at the Henderson gaging station, located about 7 miles downstream from the mouth of Sand Creek, was estimated to be 12,000 cubic feet per second. . Flood of 16 and 17 June 1965. The catastrophic rainstorms of June 1965 also produced major flooding in the Sand Creek basin. Rainfall up to 14 inches fell on the Plum Creek basin during the afternoon and evening of 16 June 1965. The storm pattern extended over Sand and Toll Gate Creeks with rainfall averaging 2 to 4 inches over the Sand Creek basin. Resulting discharges on Sand Creek were estimated to be 13,400 cubic feet per second at Sable Avenue, located about 0.5 mile upstream from Toll Gate Creek, and 18,900 cubic feet per second downstream from Toll Gate Creek. The peak flow on Toll Gate Creek was estimated to be 17,000 cubic feet per second at East 6th Avenue in Aurora. Heavy runoff from Sand and Toll Gate Creeks caused extensive damage in the Aurora vicinity and contributed additional flood volume to the South Platte River north of Denver. Nearly every highway and railroad bridge crossing Sand and Toll Gate Creeks was either damaged or destroyed. About 750 acres of land adjoining Sand Creek and 120 acres of land adjoining Toll Gate Creek were inundated. Flooding along the downstream 10 miles of Sand Creek spread to widths ranging between 500 to 1,500 feet. On the downstream 6 miles of Toll Gate Creek, the flood width ranged from 300 to 1,000 feet. 40 .