Author(s): S. Lee; Y. Jin
Keywords: No keywords
Abstract: Hedging operation of reservoirs may be a useful method of water supply for drought periods. A reservoir operation method was studied, which included a derivation of discrete hedging rule applying a linear programming, an ensemble streamflow prediction, and reservoir simulations observing the derived hedging rule comprising four phases. Dam operators supply water based on the available water and the phase in which the available water is. Available water of a reservoir is defined by the current storage plus the inflow volume of the future time period. The future inflow volume was computed by ensemble streamflow prediction using historical weather condition scenarios and precipitation forecast. Reservoir operations of Hapcheon Dam, Republic of Korea were simulated applying the derived hedging rule curves and ensemble streamflow predictions. The results showed the reduction of maximum and overall water supply deficit. The derived hedging rule curves are certainly worth practical reservoir operation for water supply.