Abstract: This paper presents a combined simulation-optimization model for simulating reservoir operations without any detailed operation rules; it features the integration of a nonlinear, multiple-objective function and a heuristic ...

Abstract: This study presents two gray models with which to forecast groundwater levels at two study sites; one is located on an island area, and one is in an inland area. These models used the moving average of daily infiltration ...

Abstract: This paper presents a hydrologic gray model integrated with a global search method to improve the accuracy of real-time flood forecasting for two watersheds. The model’s applicability is evaluated by comparing the runoff ...

Abstract: To efficiently manage the water supply for paddy rice and to reduce the inundation damage from floods, it is necessary to enhance our understanding of the characteristics of the surface water hydraulics in an irrigated ...

Abstract: Factor analysis is used to develop an integrated indicator system that evaluates the state of watersheds from three perspectives (subindexes): water-use management, flood management, and environment and ecosystem management. ...