Agusan del Sur Province

  • The Great Agusan River in Mindanao

    The Great Agusan River in Mindanao

    The Agusan River is the third-largest river system in the Philippines, with a total length of approximately 350 kilometers. The river has a complex system of tributaries, including the Andanan River, Wawa River, and Gibong River, among others. The river basin is known for its diverse ecosystems, including forests, marshlands, and wetlands. The Agusan Marsh…