Application of an Optimization/Simulation Model for the Real-Time Flood Operation of River-Reservoir Systems with One- and Two-Dimensional Unsteady Flow Modeling

An application is presented of a new methodology for the real-time operations river-reservoir systems. The based upon an optimization/simulation modeling approach that interfaces optimization with one and/or two-dimensional unsteady flow simulation model (U.S. Army Corps Engineers HEC-RAS). also includes short-term rainfall forecasting, and U.S. HEC-HMS rainfall-runoff modeling. Both forecasted in addition to gaged streamflow data NEXRAD (Next-Generation Radar) can be implemented approach. solution genetic algorithm through MATLAB. May 2010 flood event on Cumberland River system USA, during which releases from Old Hickory dam caused major flooding downstream area Nashville, TN, allowed placed emergency operational situation. One features effort was investigate use different approaches available HEC-RAS, including one-dimensional (1D), (2D), combined (1D/2D) results 2D modeling, diffusion wave approach, found superior system. successfully determined would have maintained water surface elevations at control point Nashville below 100-year return period river maintaining gate openings Dam reaching situation, could losses dam.