Open AccessRainfall-Runoff Simulation for Water Availability Estimation in Small Island Using Distributed Hydrological Model wflow
Author(s) -
Wulan Seizarwati,
M Syahidah
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/930/1/012050
Subject(s) - surface runoff , hydrology (agriculture) , environmental science , evapotranspiration , digital elevation model , drainage basin , water balance , hydrological modelling , vflo , streamflow , land use , distributed element model , runoff model , geography , remote sensing , geology , cartography , ecology , civil engineering , geotechnical engineering , physics , climatology , quantum mechanics , engineering , biology
Hydrological data in Indonesia, especially in the small islands, is minimal, including spatial distribution and temporal completeness. It will affect the accuracy of water availability estimation for water resources management interest. One of the solutions that can be undertaken is applying rainfall-runoff modeling to obtain the discharge value at a specific location. This study aims to determine surface water availability in each sub-catchment of the small island by implementing the hydrological model. The wflow model is applying to perform the model. This model uses input data including Digital Elevation Model (DEM), landuse, soil, Leaf Area Index (LAI), rainfall, evapotranspiration, and observation of river discharge for the calibration process. As a result, this island consists of 30 catchments with some potential catchments, namely Cao, Sakita, and Tatamo, that have a 90% dependable flow of 4213.3 L/s, 3803.6 L/s 8117 L/s, respectively. The result of water availability in Morotai Island is highly expected to be the reference for water resources management, especially for tourism and urban development.