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<br />, <br />::- <br />~ <br /> <br />~ <br />f,-'. <br /> <br />South Platte River basin are summarized by the three major categories, <br />rural, urban and transportation in table 10. Also included in this <br />summary are the associated secondary economic losses., <br /> <br />VI. DESCRIPTION OF THE FLOODS OF 23-27 JULY 1965 <br />34. STORM PATTERN <br /> <br />a. General. A series of rainstorms during this period was the <br />primary cause of flooding throughout the South Platte River basin. <br />Rainfall was particularly heavy in the Denver'area over Plum Creek, <br />Clear Creek, Bear Creek, and San'd and Toll Gate Creek basins. The <br />heaviest amount of rain fell in the Denver and Colorado Springs areas, <br />with some local areas receiving more than an. inch of rain. The <br />southwest Denver metropolitan area received 1.95 inches of rain in <br />30 minutes. <br /> <br />b. Areas of flooding. Heavy rains in the Leavenworth Creek drainage <br />area, a tributary of Clear Creek, caused flooding in the town of <br />Georgetown, Colorado. An estimated 25 families evacuated their homes <br />in the pre-dawn hours on 24 July as water edged up to their doorsills. <br />The Georgetown sewer system was knocked out by the flood, and water <br />supply was contaminated. Telephone communications between Georgetown <br />and Idaho Springs were temporarily knocked out. Clear Creek, which <br />runs through Golden, Colorado ran high, but flooding in Golden was <br />from Tucker Gulch, a tributary of Clear Creek. Flood damage was <br />confined to the north part of Golden where several homes were damaged <br />along with cars and other personal 'property. Minor damage was done <br />to the city's ,sewer system. Arvada, Colorado, located on ClearCree~ <br />downstream from Golden, sustained flood damage to city and private <br />property. Flood waters in Sellers Gulch and on Plum Creek in the <br />vicinity of Castle Rock were backed up'behind'land-filled road <br />culverts put.up temporarily to handle traffic after the 16 June flood. <br />The only damage in the Castle Rock area was 'to one trailer parked <br />near the junction of the two creeks and to'a motel at the water's <br />ed8e which also was damaged during the previous flood. This damage <br />was believed to be caused by the backup of water behind the temporary <br />fills of the highway department. Both Big'Dry and Little Dry Creeks <br />were rushing torrents for several hours 26 July causing minor damage <br />to the city park in Englewood. Little Dry Creek was widened a few <br />years ago and thfs improvement undoubtedly reduced the private damage <br />to almost nothing. A 'series of thundershowers over the Sand and <br />Toll Gate Creek basins resulted in flash flooding in Aurora. A <br />number of basements in the older portioD "of the' city were flooded. <br />Floodwaters from the South Platte River in' the Littleton area forced <br />300 to 400 persons to evacuate their homes the evening of 24 July. <br />Approximately 30 homes, 72 trailers, and six businesses were affected <br />by the high water, but damage was far, less than that of the flood of <br />16-18 June. In Sheridan, along Bear Creek, about 75 homes and 300 <br /> <br />26 <br />