Ilocos Sur Irrigation / Cagayan Pamplona River Silag River Basin / Cagayan Bued River Basin / Nueva Vizcaya / La Union Cagayan River / Apayao / Isabela Hydroelectric / Benguet / Cagayan Claveria Zumigui-Ziwanan / La Union Irrigation / Ifugao / Isabela / Pangasinan Abulog River Basin / Pangasinan Irrigation / /