Laguna de Bay is the largest lake in the Philippines, located east of Metro Manila. It covers an area of approximately 90,000 hectares and is surrounded by several provinces, including Laguna and Rizal. The lake is a vital resource for fishing, agriculture, and tourism, supporting local communities. The lake is fed by numerous rivers, with the Pagsanjan River being one of the most notable. It also serves as a habitat for various fish species and migratory birds. Laguna de Bay plays a crucial role in the region's ecosystem and is important for flood control and water supply.