Environmental Flow for Sungai Johor Estuary A.Kadir Adilah, Yusop Zulkifli, Z. Noor Zainura and Baharim N. Bakhiah E3S Web Conf., 34 (2018) 02041 Published online: 19 March 2018 DOI: 10.1051/e3sconf/20183402041