An Approach to the Adaptive Flood Control by Multi-Reservoir Systems

Abstract

The aim of this study is to establish a procedure for the adaptive flood control by multi-reservoir systems. The multi-reservoir systems have several reservoirs located in series, parallel, or mixed type and several flood defence points. The foundamental idea is to combine the typhoon simulation techniques with the optimal operation techniques based on Dynamic Programming. That is to say, at every control time, many typhoons are simulated according to the stochastic structures of a typhoon. And for each simulated typhoon, an optimal release flow at the control time will be decided in a sense of a probability of exceedance, or a safety rate based on the frequency distribution estimated from the set of the above optimal release flow. Of course, the simulated results antecedent to the control time will be compared with the observed ; and through the feedback loop, the characteristic parameters will be corrected. From this point of view, we may consider this procedure as an approach to “the adaptive flood control”.