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Manoligao watershed, located in Barangay Del Pilar, Cagdianao, Dinagat Islands, serves as the primary freshwater source for the local community. Measuring around 9.31 kilometers in length and ranging ...from 5 to 210 meters in elevation, the watershed features a mix of mountainous and forested terrain. To better understand its drainage network, the study used satellite imagery from Sentinel-1 and RS-GIS tools like PCI Geomatica 2018 and HEC-HMS for automated lineament extraction and watershed analysis. Findings show that the drainage pattern is strongly influenced by NE-NW trending lineaments, which were also observed in the outcrops nearby natural springs, with a majority rock unit of harzburgite. These structural features appear to guide both surface water flow and groundwater distribution. The study focuses on how geological structures play a significant role in shaping Manoligao watershed's hydrology and reinforces the importance of using modern GIS tools for more accurate analysis.続きを見る
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Mendeley出力
2025_p1597