Abstract
If the hydrological characteristics of river basin is obvious, high level prediction of inflow to flow in reservoir can be performed. On the other hand, the automatic operation of dam is generally desired to lighten works for administrator controlled of dam. Fuzzy theory can be applied to the operating system of dam which is difficult to be expressive by numerical formula.
In this paper, the possibility of the application of fuzzy theory to the operating system of dam is investigated comparing the results simulated by fuzzy theory with the results operated by actual operator.
