Relationship of Rainfall and Flood Return Periods through Hydrologic and Hydraulic Modeling

In order to examine the relationship between rainfall return periods and flood periods, design storm approach is compared rainfall–runoff continuous simulation frequency analysis approach. The former was based on event-based hydrological simulations, while latter simulations analysis. All were undertaken employing HEC-HMS software. For analysis, Generalized Extreme Value (GEV) probability distribution used. both Type I (Gumbel) GEV theoretical distributions used each other. Flood hazard (inundation depth, flow velocities extent) estimated hydrodynamic HEC-RAS study area Pineios catchment, upstream of Larissa city, Greece. results revealed that assumption equivalent discharge not valid for area. instance, a 50-year period corresponds about 110 years. Even if measurements are available, re-analysis datasets may be alternatively