Design Storms and Sizing of Flood Control Facilities

by Timothy E. Sutko, Clark County Regional Flood Control, District, Las Vegas, United States,
Syndi Flippin, Clark County Regional Flood Control, District, Las Vegas, United States,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H²AL)

Abstract: Design stroms which embody the rainfall characteristics of an area are used for the sizing of drainage facilities. The selection of a design strom may significantly influence the design and therfore the cost of those facilities and the ability of public agencies to implement a flood control program in as timely manner. In Clark County, Nevada, the SCS Type II storm was utilized for most rainfall-runoff studies performed prior to 1979. Subsequent to that time, 3-hour design storms have been used for Flood Hazard Studies, Master plan development and other drainage studies. The Corps of Engineers developed five 6-hour storm distributions for their 1988 feasibility study of the Las Vegas Wash and tributaries. A study was conducted to determine what impact the use of 3-, 6- and 24-hour design storms have on the sizing of flood control facilities in the Las Vegas Valley.

Subject Headings: Floods | Hydraulic design | Building design | Storms | Feasibility studies | Rainfall-runoff relationships | Drainage | North America | United States | Nevada | Las Vegas | South Carolina

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