Laguna de Bay: 2013 Ecosystem Health Report Card

Laguna de Bay is the largest inland water in the Philippines and the third largest in South East Asia. The lake has a surface area of 900 km², with an average depth of about 2.5 meters and an elevation of about 1 meter above sea level. It is bordered by the province of Laguna in the east, west and southwest, the province of Rizal in the north to northeast, and Metro Manila in the northwest.