List of rivers in Region I (Ilocos Region)
The following is a partial list of rivers in Region I (Ilocos Region).
List
| Name | Province | City/municipality | Outflow |
|---|---|---|---|
| Aqua Grande River | Ilocos Norte | Pagudpud | Pasaleng Bay |
| Baag River | Ilocos Norte | Pagudpud | Pasaleng Bay |
| Bacarra River | Ilocos Norte | Bacarra, Laoag and Vintar | Nagabungan Bay |
| Badoc-Apatot River | Ilocos Norte | Pinili, Badoc and Nueva Era | Gavu Bay |
| Baruyen River | Ilocos Norte | Bangui, Burgos and Pasuquin | Bangui Bay |
| Buagea River | Ilocos Norte | Bangui | Bangui Bay |
| Bulu River | Ilocos Norte | Pagudpud, Bangui, Dumalneg, Adams and Vintar | Bangui Bay |
| Buraan River | Ilocos Norte | Burgos | Bangui Bay |
| Cabacanan River | Ilocos Norte | Pagudpud | Bangui Bay |
| Cabulataan River | Ilocos Norte | Pasuquin, Bacarra, Bangui, Dumalneg and Vintar | Nagabungan Bay |
| Caparispisan River | Ilocos Norte | Pagudpud | Bangui Bay |
| Caunayan River | Ilocos Norte | Pagudpud | Caunangan Bay |
| Currimao River | Ilocos Norte | Currimao | Gavu Bay |
| Laoag River | Ilocos Norte | Laoag, San Nicolas, Bacarra, Vintar, Sarat, Piddig, Dingras, Marcos, Banna, Nueva Era, Solsona and Carasi | Nagabungan Bay |
| Magabog River | Ilocos Norte | Pagudpud | Pasaleng Bay |
| Magarayap River | Ilocos Norte | San Gabriel | West Philippine Sea |
| Maglaot River | Ilocos Norte | Currimao and Pinili | Gavu Bay |
| Manayan River | Ilocos Norte | Bangui | Bangui Bay |
| Nagabungan River | Ilocos Norte | Pasuquin and Burgos | Nagabungan Bay |
| Pansian River | Ilocos Norte | Pagudpud | Pasaleng Bay |
| Pasaleng River | Ilocos Norte | Pagudpud | Pasaleng Bay |
| Quiaoit River | Ilocos Norte | Paoay, Batac and Sarrat | Gavu Bay |
| San Mateo River | Ilocos Norte | Laoag City | Nagabungan Bay |
| Santo Domingo River | Ilocos Norte | Pasuquin, Burgos and Vintar | Nagabungan Bay |
| Tolnagan River | Ilocos Norte | Pasuquin | Nagabungan Bay |
| Amburayan River | Ilocos Sur | Tagudin, Sigay, Suyo, Allem, Sugpon | West Philippine Sea |
| Bantaoay River | Ilocos Sur | San Vicente, San Ildefonso, Santo Domingo and Bantay | West Philippine Sea |
| Bayogai River | Ilocos Sur | Santa Cruz and Suyo | West Philippine Sea |
| Bicat River | Ilocos Sur | San Juan, Masingal and Nueva Era | Lapog Bay |
| Bimmeclet River | Ilocos Sur | Sinait and Cabugao | Cabugao Bay |
| Buaya River | Ilocos Sur | Santa Lucia, Santa Cruz, Salcedo, Suyo, Sigay, Gregorio del Pilar, Quirino and San Emillo | West Philippine Sea |
| Cabugao River | Ilocos Sur | Cabugao | Cabugao Bay |
| Candon River | Ilocos Sur | Candon, Banayoyo, Santiago, Lidlidda, Galimuyod and San Emillo | West Philippine Sea |
| Catalina River | Ilocos Sur | San Vicente and Santa Catalina | West Philippine Sea |
| Coveta River | Ilocos Sur | Santiago, San Esteban and Santa Maria | Solvec Bay |
| Dili River | Ilocos Sur | Santa Cruz | West Philippine Sea |
| Loob River | Ilocos Sur | Sinait | Cabugao Bay |
| Lupting-Lapog River | Ilocos Sur | San Juan and Nueva Era | Lapog Bay |
| Marcelino River | Ilocos Sur | Sinait | Cabugao Bay |
| Mestizo River | Ilocos Sur | Caoayan, Vigan and Bantay | West Philippine Sea |
| Namunuan River | Ilocos Sur | Santo Domingo, San Vicente and San Ildefonso | West Philippine Sea |
| Naruken River | Ilocos Sur | Narvacan and Nagbukel | West Philippine Sea |
| Narvacan River | Ilocos Sur | Narvacan and Nagbukel | Solvec Bay |
| Ogyo Daya River | Ilocos Sur | Candon and Galimuyod | West Philippine Sea |
| Panday River | Ilocos Sur | Vigan | West Philippine Sea |
| Parsua River | Ilocos Sur | San Juan and Masingal | Lapog Bay |
| Santa Maria River | Ilocos Sur | Narvacan, Santa Maria, Nagbukel, Burgos, San Esteban, Lidlidda, Santiago, Banayoyo and San Emilio | Solvec Bay |
| Sinait River | Ilocos Sur | Sinait | Cabugao Bay |
| Sunek River | Ilocos Sur | Narvacan and Santa | Solvec Bay |
| Vigan River | Ilocos Sur | Santa Catalina and Vigan | West Philippine Sea |
| Agoo River | La Union | Agoo, Tubao and Santo Tomas | Lingayen Gulf |
| Amburayan River | La Union | Bangar, Supiden, Santol | West Philippine Sea |
| Aringay River | La Union | Aringay, Caba, Tubao, Pugo | Lingayen Gulf |
| Bauang River | La Union | Bauang, Naguilian, San Fernando, Burgos, Bagulin | Lingayen Gulf |
| Bororo River | La Union | Bacnotan, San Juan, San Fernando, San Gabriel and Bagulin | West Philippine Sea |
| Busilak River | La Union | Bangar, Supiden and Luna | West Philippine Sea |
| Caba River | La Union | Caba and Bauang | Lingayen Gulf |
| Cupang River | La Union | Santo Tomas | Lingayen Gulf |
| Darigayos River | La Union | Luna, Balaoan and Santol | West Philippine Sea |
| Magarayap River | La Union | Bacnotan, Balaoan, Santol | West Philippine Sea |
| Patalan River | La Union | Santo Tomas, Rosario, Pugo | Lingayen Gulf |
| Alaminos River | Pangasinan | Alaminos, Sual, Mabini and Labrador | Lingayen Gulf |
| Atel River | Pangasinan | Dasol and Infanta | Dasol Bay |
| Balincaguin River | Pangasinan | Agno, Burgos, Mabini, Dasol and Infanta | Agno Bay |
| Balingasay River | Pangasinan | Bolinao and Bani | West Philippine Sea |
| Banog River | Pangasinan | Dasol and Infanta | Dasol Bay |
| Bayambang River | Pangasinan | Dasol | Dasol Bay |
| Buruan River | Pangasinan | Agno and Burgos | Agno Bay |
| Cato River | Pangasinan | Infanta | Dasol Bay |
| Catubig River | Pangasinan | Bolinao | Lingayen Gulf |
| Dagupan River | Pangasinan | Dagupan, Mangaldan, Binmaley, Lingayen, Bugallon, San Carlos, Calasiao, Mapandan, Santa Barbara, Malasiqui, Urdaneta, Basista, Urbiztondo | Lingayen Gulf |
| Dasol River | Pangasinan | Dasol and Burgos | Dasol Bay |
| Espital River | Pangasinan | Dasol | Dasol Bay |
| Hermosa River | Pangasinan | Dasol | Dasol Bay |
| Inerangan-Carita-Masedem River | Pangasinan | Bani, Alaminos, Agno and Mabini | Lingayen Gulf |
| Lasud River | Pangasinan | Agno and Bani | Agno Bay |
| Locloc River | Pangasinan | Agno | Agno Bay |
| Nayom River | Pangasinan | Infanta and Mabini | Dasol Bay |
| Nugulong River | Pangasinan | Sual | Lingayen Gulf |
| Patalan River | Pangasinan | Dagupan, San Fabian, Mangaldan, San Jacinto, Sison, Pozorrubio, Manaoag, Mapandan, Laoac, Binalonan, San Manuel, Asingan, Urdaneta | Lingayen Gulf |
| Ponic River | Pangasinan | Dasol | Dasol Bay |
| Punged River | Pangasinan | Dasol and Burgos | Dasol Bay |
| Santa Rita River | Pangasinan | Anda | Lingayen Gulf |
| Tanglao River | Pangasinan | Dasol | Dasol Bay |
| Tupa River | Pangasinan | Agno and Burgos | Agno Bay |
| Uli River | Pangasinan | Dasol and Burgos | Dasol Bay |
Sources
- Department of Environment and Natural Resources - Biodiversity Management Bureau (bmb.gov.ph)
- Department of Environment and Natural Resources - Environmental Management Bureau (emb.gov.ph)
- Philippine Information Agency (pia.gov.ph)
- Department of the Interior and Local Government (dilg.gov.ph)
- Official websites of Philippine provinces