Stochastic generation of flood hydrograph in Jamishan dam catchment

Subject Areas : environmental management

Ahmad Sherafati ¹ ( - دکتری عمران- مهندسی آب، دانشگاه علم و صنعت ایران*(مسئول مکاتبات). )
Bagher Zahabiyoon ² ( استادیار دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران )

Received: 2011-07-09 Accepted : 2011-11-13 Published : 2012-12-21

Keywords: Hydrograph, Monte Carlo, Flood generation, HEC-HMS, RPG model,

Abstract :

Flood hydrograph is a one of most important component in hydrological and hydraulics analysis. Estimation of design flood with consideration uncertainty of random variable is important in design of hydraulic structure. In conventional method, peak of design flood is estimated by use of frequency analysis. In this approach uncertainty of other variable such as rainfall, loss and base flow is missed. In this paper flood hydrograph is generated in Jamishan dam catchment with consideration of uncertainty of random variable by use of combination of RPG model, HEC-HMS and Monte Carlo simulation. Result is shown; methodology that be used in this paper has good accuracy to flood hydrograph generation and 100 percent of volume, peak and hydrograph of flood is located in confidence band.