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<br /> <br />22. Discharge. The estimated peak discharge was 3,500 cubic feet <br />per second. <br /> <br /> <br />23. Damages. The vTater scoured around the left abutment of a <br />timber bridge in the city and badly eroded the highway fill on an ap- <br />proach to the city. About four miles downstream from lVheatland a short <br />section of the Colorado and Southern Railroad tracks was undercut. <br />About 10 :00 A.11. on May 22 a train was derailed b~' the damaged road <br />bed killing two trainmen. Traffic was interrupted for about twenty- <br />four hours and the v!reckage Vias not completely cleared away until May 25. <br />A summary of the damages follows: <br /> <br />TOTAL <br /> <br />$100,000 <br />5,000 <br />4,000 <br />2,0-:)0 <br />500 <br />$111,500 <br /> <br />Railroad (including traffic interruption) <br />Roads and bridges <br />Dwellings and business buildings <br />Agricul tural <br />Irrigation canal <br /> <br />24. Miscellaneous flood investigations. (a) The thunderstono <br />activi ty of May 21, 1948, which caused the storm near lVheatland, Wyoming, <br />(see paragraph 21), also produced intense rainfall for a short period <br />of time southwest of I~lbeta, Nebraska. The inability of a small drain- <br />age ditch to accommodate the flood discharge and severe overland flow, <br />caused an estimated $2,400 damages to crops and $500 to roeds. (b) A <br />report of severe hail and flood damages from a storm on June 15, 1948, at <br />Sterling, Colorado, was investigated. Damage was mostly from the severe <br />hail storm, and, local flooding of streets and basements. (c) ReForts <br />of a flood in Bear Creek near Evergreen, Oolorado, on June 20, 1948, were <br />investigated and found to be only heavy hillside runoff, which was <br />caused by a local thunderstorm. <br /> <br />..,. <br /> <br />IV SUIl'.mary <br /> <br />25. Summary. Flooding along the main stems of the !Jorth and South <br />Platte Rivers during 1948 was minor. The cloudburst type of convective <br />storm over comparatively small areas was the major flood contributing <br />factor along the tributaries. Storm studies of the storms that caused <br />flooding on Tucker Gulch, Sand Creek, Mitchell Valley,' and Spring Canyon <br />have been initiated because of their characteristics. Teble 3 sUIl'Jnarizes <br />the estimated flood damages in the Denver District during 1948. <br /> <br />V Benefits Assi~nab]e ~orns of Rn~ineers <br />'Flood Control Projects. <br /> <br />26. Benefits. There are no benefits assignable to Corps of Engineers <br />projects (either existing or authorized) for the calendar year of 1948 <br />within the Denver District. <br /> <br />6 <br />