A System Dynamic Model for Sustainable Water Resource Management in Wangi-Wangi Island, Wakatobi, Indonesia

The stewardship of water resources, a vital pillar of any ecosystem, underpins the evolution of sustainable socio-economic systems, particularly on islands.This study employs a dynamic system analysis to model sustainable water resource management on Wangi-Wangi Island in Wakatobi Regency, an area prone to raw water deficits.Four distinct scenarios have been constructed for this analysis: the existing 'Business as Usual' scenario (BAU), Scenario-1 (water conservation efforts and water-saving movements increased by 5%), Scenario-2 (an extension of Scenario-1 with a 7.5% increase in interventions and a 2.5% tourist growth rate control), and Scenario-3 (an expansion of Scenario-2 with an additional 5% increase in interventions).Preliminary system dynamic analysis outcomes indicate that, under the BAU scenario, the Wangi-Wangi Islands could face a raw water shortfall of -1,293,622 m 3 /year from 2016 through 2055.This underscores an urgent need for policy intervention to foster a sustainable water resource management system.Under Scenario-1, a modest improvement is predicted, with a small surplus of water availability (543,785 m 3 /year) projected.Scenario-2 anticipates a surplus of 1,690,506 m 3 /year until the period of 2044-2047, while Scenario-3 predicts a surplus of 1,085,029 m 3 /year through the end of the projection period.These projected surpluses, however, are contingent upon robust support from all stakeholders in terms of policy enforcement, financial investment, and public awareness.This study's findings underscore the critical need for comprehensive, sustainable water resource management policies and practices in island settings to avert impending water crises.