Abstract
A distributed hydrological model was used to simulate hydrological processes in Agatsuma River basin at hourly time steps. By using interpreted radar products and rain gauge rainfall data, simulated inflow to Shimagawa dam have been used as input to a reservoir operation module running simultaneously with the distributed hydrological model. The reservoir operation module uses a storage function approach in order to update the actual volume dam at each time step. Volumes were translated into water levels by using an H-V curve. The operational rule uses the updated water level in order to decide release. The developed scheme offers an easy way to modify the operation rule; therefore, it allows for the incorporation of an optimization scheme in future research. To reduce potential damage of floods and droughts in Tone River basin an optimal reservoir operation scheme will play an important role in the protection of downstream areas and contribute to effective use of water resources.
