| Optimum dam control for water supply has yet to be realized in dam operation offices，despite numerous studies on the subject．This is not only because there is no practical and easymatical model，but also because technologies of long-term inflow forecasting and droughtdamage evaluation are undeveloped．This paper describes a practical，easy system model thatenables water supply control．[*]The model was formulated by the introduction of statistical factors into classical theory of mass-curve or reverse residual mass-curve．A dam control simulation supposing a normal range of evaluation functions for the model found the difference in drought damage to be unexpectedly small．This indicatesthat a high degree of control over dam water supply is achievable even when future inflow and evaluation function are unknown．This paper seeks to introduce the theory behind the model，so that it may gain widespread understanding and practical application． |
