Analysis of Land Cover Changes and Their Implications for Raw Water Availability in the Pulai Watershed: A Case Study on Water Resource Management in the Small Island of Tanjungpinang City
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Abstract
This study examines the management of the Pulai Watershed as the primary source of raw water for Tanjungpinang City, focusing on its physical characteristics, land cover changes, and water demand projections. Utilizing a mixed-method approach, the research analyzes satellite imagery, hydrological data, and population growth projections. Results indicate significant land cover changes, with a decrease in dense vegetation area from 43.5% to 0.64% between 1990 and 2023. The analysis of water storage capacity reveals a potential of 297,876,305.67 m³, although its distribution is uneven. Water demand projections show an increase from 11,314,591 m³/year in 2023 to 16,064,946 m³/year in 2043, posing challenges in raw water provision. Management recommendations include optimizing limited water resources, integrated coastal zone management, diversifying water sources, and climate change adaptation specific to small islands. This study underscores the importance of an integrated approach in managing small island watersheds to ensure the sustainability of water resources.
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