Penentuan Pola Operasi Waduk Bajulmati Kabupaten Banyuwangi Jawa Timur

Bajulmati reservoir is located in the two regions, Banyuwangi and Situbondo, East Java. Bajulmati extensive irrigation area is 1800 hectares, but only 779 hectares receives a steady water supply. This resulted in the land in the area become unproductive. Besides being used to overcome the problem of irrigation, Bajulmati reservoir also will be used to provide of clean water for 18000 households and power plants. In order to fulfill these functions optimally, it needs an operation pattern for Bajulmati reservoir in Banyuwangi, East Java. The first step in this study is an analysis of hydrology. This study uses FJ. Mock method to obtain discharge availability of river flow. The next step is to analyze the mainstay discharge using the Basic Year with reliability of 26.02% (enough water discharge), 50.68% (normal water discharge), 75.34% (low water discharge) and 97.30% (dry water discharge). Furthermore, simulation based on catchment reservoirs (method I) to obtain optimal operation patterns, and analyze the optimum outflow through a dynamic program. The outflow results that obtained from the dynamic program used for simulation to determine the most optimal operation pattern of reservoir operation based on dynamic program (method II). Furthermore, this study analyzes the most optimal operational pattern of the two methods based on several parameters of success. Based on the parameters consisting of the opportunities reliability of reservoirs, the amount of spillout, the fulfillment of the irrigation and raw water requirements, the electricity production, as well as the comparison of each requirement and removable in each period in each of the reliability of the discharge, this study concludes that the most optimal pattern of reservoir operation rules of Bajulmati reservoir is the operation pattern rules (which can be seen in the form of rule curve) that generated by dynamic program. Based on the result, it shown that the operation pattern can be applied in the operation of Bajulmati reservoir