The Effect of Tidal Influence on the Palingkau Swamp Irrigation Area SP1, SP2, SP3 Brama Lesmono, Rachmad Jayadi and Adam Pamuji Rahardjo E3S Web Conf., 576 (2024) 03002 Published online: 03 October 2024 DOI: 10.1051/e3sconf/202457603002