Spatial and temporal monitoring of drought hazards in Opak WatershedSapta Suhardono, Iva Yenis Septiariva, Sovia Wijayanti, Naila Maulida Ibriza and I Wayan Koko SuryawanE3S Web Conf., 605 (2025) 03041DOI: https://doi.org/10.1051/e3sconf/202560503041