The Gasan River is a river located in the Philippines, specifically on the island of Marinduque. It flows through the municipality of Gasan, which shares its name. The river is an important waterway for the local community, providing resources for agriculture and fishing. The Gasan River is characterized by its lush surroundings and diverse ecosystems. It supports various wildlife and plant species, contributing to the region's biodiversity. The river also plays a role in local culture and traditions, as it is often featured in community events and activities.