North Luzon

Angat WatershedNorzagaray-San Jose del Monte, Bulacan
Magat WatershedIfugao, Isabela and Nueva Viscaya
Pantabangan-Carranglan WatershedNueva Ecija, Nueva Viscaya and Aurora
San Roque WatershedPangasinan and Benguet
Upper Agno River WatershedBenguet, Ifugao, Mountain Province and Nueva Viscaya

South Luzon

Buhi-Barit WatershedAlbay and Camarines Sur
Caliraya-Lumot WatershedCavinte, Kalayaan, Lumban and Paete, Laguna
Makiling-Banahaw WatershedLaguna, Batangas and Quezon
Tiwi WatershedAlbay and Camarines Sur

Mindanao

Lake Lanao Agus River WatershedLanao del Norte and Lanao del Sur
Pulangi WatershedBukidnon