Analysis of Flood Routing

Abstract

Flood routing is the technique of determining the flood hydrograph at a section of a river by utilizing the data of flood flow at one or more upstream sections. The hydrologic analysis of problems such as flood forecasting, flood protection, reservoir design and spillway design invariably include flood routing. In these applications two broad categories of routing can be recognized. These are reservoir routing and channel routing. In reservoir routing the effect of a flood wave entering a reservoir is studied. In channel routing the change in the shape of a hydrograph as it travels down a channel is studied. In this paper pick rate of runoff and risk of a coffer dam for different construction years are discussed. We found that peakrate depends on length of travel of water course and risk of coffer dam is more if it is designed for short time for long construction period.