This study presents an ecological planning approach for a delineated sub-watershed in Gabaldon, Nueva Ecija, Philippines, an area known for its rich biodiversity and ecotourism potential, particularly Gabaldon Falls. Despite its ecological value, the area faces threats from forest degradation, land conversion, and natural hazards such as floods and landslides. Using geospatial technologies such as Quantum Geographic Information System (QGIS), Shuttle Radar Topography Mission Digital Elevation Model (SRTM DEM), and satellite imagery, fifteen biotopes were identified and assessed based on biodiversity value, habitat condition, slope stability, flood exposure, and development pressure, revealing that over 60% of the area remains ecologically significant but under environmental stress. The findings guided the formulation of four nature-based strategies: Preservation, Conservation, Improvement, and Creation, which serve as nature-based solutions tailored to enhance ecological resilience and reduce disaster risks. An ecological network was also designed, integrating stream buffers, core conservation zones, and green corridors to improve landscape connectivity and hazard mitigation. This study demonstrates that nature-based ecological planning can preserve ecological integrity, promote sustainable ecotourism, and strengthen community resilience, contributing to integrated and sustainable landscape development.