The Cagayan River, also known as the Rio Grande de Cagayan, is the second longest river in the Philippines, located in the Cagayan Valley region in northeastern part of Luzon Island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan.
The Cagayan River, also known as the Rio Grande de Cagayan, is the second longest river in the Philippines, and the largest river by discharge volume of water (followed by Rio Grande de Mindanao). It is located in the Cagayan Valley region in northeastern part of Luzon Island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan.