Sustaining Batujai Reservoir Operation Using Simulation and Recursive Optimization

As the oldest water resource in Dodokan River, Batujai need to overcome the problem caused by the changes of hydrology and lack of concern to sustaining the water supply and storage with proportionalities time to time. Due to historical reservoir operation data in 2014-2018, Batujai has experienced 11 time period of storage emptinees. Optimization is using the deterministic-linear programming and combine with recursive iteration, to assuring the objective function is maximum but still have a reliable proportion of water supply portion and storage. By using simulation and recursive optimization in 2014-2018, reservoir performance are increasing; reservoir did not experience a storage emptiness; and high water supply portion. Therefore, based on the comparative result between recursive optimization with non-recursive optimization and historical data, Batujai can be more sustainable, efficient and equal in reservoir operation across time period by using recursive optimization.