Evaluation of sediment management for two large reservoirs in Lombok island Ery Setiawan, Syamsul Hidayat, Ida Bagus Giri Putra, Muhammad Bagus Budianto and Salehudin MATEC Web Conf., 195 (2018) 05002 Published online: 22 August 2018 DOI: 10.1051/matecconf/201819505002