Rivers & Lakes
Rivers, lakes, lagoons, waterfalls, and natural water features across the Philippines.
112 articlesArticles
Bugang River: Ecology, Conservation and Ecotourism in Pandan, Antique
The Bugang River in Pandan, Antique, is a 6 km river recognized as the Philippines' Cleanest Inland Body of Water, featuring unique fish bio...
Zapote River: Geography, Battle of 1899 and Regional Infrastructure
The Zapote River in Metro Manila and Cavite, site of the 1899 Battle of Zapote River and key regional boundary.
Naga River: Hydrology and Cultural Significance in Camarines Sur
The Naga River in Camarines Sur is an extension of the Bicol River, celebrated annually for its cultural and historical importance to the ci...
Aklan River: Hydrology, Etymology and Watershed Conservation
The Aklan River is the longest river in Aklan province and the third-longest on Panay island, originating from Mount Baloy.
Ilagan River: Hydrology and Basin Geography in Isabela
The Ilagan River is a major tributary of the Cagayan River in Isabela, Philippines, with a catchment of 3132 square kilometres.
Lake Danao (Leyte): Geography, Hydrology and Conservation
Volcanic lake in Leyte supplying water to Tacloban; protected under NIPAS Act.
Rio Grande de Mindanao: Hydrology, Basin Geography and Flood Management
The Rio Grande de Mindanao is the largest river system in Mindanao, draining 23,169 km2. This article covers its course, tributaries, and fl...
Allah River: Hydrology, Basin Geography and Irrigation Infrastructure in Mindanao
The Allah River flows through South Cotabato, Sultan Kudarat, and Maguindanao del Sur, feeding the Mindanao River.
Siniloan River: Hydrology, Conservation and Recreational Geography
The Siniloan River in Laguna, Philippines, is a tributary of Laguna de Bay known for its waterfalls and conservation efforts.
Chico River: Geography, Kalinga Heritage and the Dam Controversy
The Chico River is the longest tributary of the Cagayan River in Luzon, spanning 233 km through the Cordillera region.
Agno River: Hydrology, Infrastructure and Basin Ecology
The Agno River is the largest river by discharge in the Philippines, draining 6.6 cubic kilometers into Lingayen Gulf. It features three maj...
Tambagoko River: Hydrology, Cacao Production and Basin Geography in Agusan del Sur
The Tambagoko River is a tributary of the Sibagat River in Agusan del Sur, Philippines, noted for its cacao production potential.
Jalaur River: Hydrology, Irrigation Infrastructure and the Multipurpose Project
The Jalaur River is the second longest river on Panay island, vital for Iloilo's irrigation and potable water supply.
Umiray River: Geography, Transbasin Project and Strategic History
The Umiray River separates Aurora and Quezon provinces in Luzon. It is a key site for the Umiray-Angat Transbasin Project and historical mil...
Muleta River: Hydrology, Agricultural Impact and Watershed Management in Bukidnon
The Muleta River is a major tributary of the Pulangi River in Bukidnon, Mindanao, Philippines, significantly impacting regional water qualit...
Sibagat River: Hydrology, Etymology and Infrastructure in Agusan del Sur
The Sibagat River is a tributary of the Wawa River in Agusan del Sur, Philippines, named after the local word for 'meeting place'.
Cagayan River (Mindanao): Hydrology, Tourism and Fishery
The Cagayan River in Mindanao flows 90 km from Bukidnon to Cagayan de Oro, known for whitewater rafting and artisanal fishery.
Sawaga River: Hydrology, Irrigation and Basin Geography in Bukidnon
The Sawaga River in Bukidnon, Philippines, is a 64.5 km waterway vital for irrigation in Malaybalay City, flowing from Mt. Tuminungan to the...
Santa Cruz River (Philippines)
River in Laguna, Philippines; tributary of Laguna de Bay; irrigation source; environmental status.
Pansipit River: Hydrology, Ecology and Aquaculture History
The Pansipit River is the sole drainage outlet of Taal Lake in Batangas, Philippines. This article covers its hydrology, ecology, and aquacu...