The Angat River is a significant waterway located in the province of Bulacan, Philippines. It originates from the Sierra Madre mountain range and flows through various municipalities before emptying into the Manila Bay. The river is an essential source of water for irrigation and domestic use in the surrounding areas. The Angat River is also crucial for the Angat Dam, which regulates water supply for the Metro Manila region. This dam plays a vital role in providing drinking water and supporting agricultural activities. The river and its surrounding ecosystem are important for local biodiversity and community livelihoods.