Rivers & Lakes
Rivers, lakes, lagoons, waterfalls, and natural water features across the Philippines.
112 articlesArticles
Apayao River: Hydrology, Ecology and the yApayaos Biosphere Reserve
The Apayao River in Luzon flows to the Pacific Ocean, forming a major basin with the Abulog River and hosting the critically endangered Asia...
Bued River: Hydrology, Siltation and Course through Luzon
The Bued River is an 80 km river in Luzon, Philippines, flowing from Baguio to Pangasinan, known for heavy siltation and mining pollution.
Angat River: Hydrology, Infrastructure and Municipal Geography
The Angat River in Bulacan flows from the Sierra Madre to Manila Bay, featuring three major dams and serving as a key water source.
Bumbungan River: Hydrology, Tourism and Conservation in Laguna
The Bumbungan River in Laguna feeds Laguna de Bay and hosts Pagsanjan Falls, a major tourist destination.
Agus River: Hydrology, Hydroelectric Power and Regional Significance
The Agus River flows from Lake Lanao to Iligan Bay, powering Mindanao's grid and shaping local ecology.
Padsan River: Hydrology and Cultural Significance in Ilocos Norte
The Padsan River is the largest river in Ilocos Norte, Philippines. It flows through Dingras, Sarrat, and Laoag City.
Tarlac River: Hydrology, Lahar Impact and Irrigation in Central Luzon
The Tarlac River is the longest tributary of the Agno River in Central Luzon, heavily impacted by Mount Pinatubo lahar.
Sibalom River: Hydrology, Watershed Ecology and Conservation in Antique
The Sibalom River is the longest river in Antique, Philippines, with a 74.5 km course and a critical lowland rainforest watershed.
Pangil River: Hydrology, Conservation and History in Laguna
The Pangil River in Laguna is a tributary of Laguna de Bay with historical significance and severe water quality issues.
Guisit River: Hydrology and the Yldefonso Legacy in Piddig
The Guisit River in Piddig, Ilocos Norte, is a gentle stream in the Laoag basin, known as the training ground for Olympian Teófilo Yldefonso...
Hinatuan Enchanted River: Geography, Exploration and Conservation
Deep spring river in Surigao del Sur, Mindanao. Features underwater caves, turtle habitat and local legends.
Pinacanauan River: Geography, Ecology and Recreation in Cagayan
The Pinacanauan River is a 46 km tributary of the Cagayan River in Luzon, known for its karst landscapes, Callao Cave proximity, and annual...
Tago River: Hydrology, Basin Geography and Irrigation in Surigao del Sur
The Tago River in Mindanao drains a 1448 sq km basin, serving as a key irrigation source for rice fields and a boundary for multiple municip...
Lobo River: Hydrology, Ecology and Infrastructure in Batangas
The Lobo River in Batangas is a 26 km waterway draining to the Verde Island Passage, noted for its clean water and irrigation value.
San Cristobal River: Hydrology and Water Quality in Laguna
The San Cristobal River, also known as Matang Tubig, is a tributary of Laguna de Bay in Calamba and Cabuyao, facing significant pollution ch...
Andanan River: Hydrology, Watershed Reserve and Infrastructure in Agusan del Sur
Profile of the Andanan River, a tributary of the Wawa River in Mindanao, covering its watershed reserve, bridges and ecological significance...
San Juan River (Calamba): Hydrology and Water Quality in Laguna
Profile of the San Juan River in Calamba, Laguna, a tributary of Laguna de Bay with significant water quality monitoring data.
Tunasan River: Hydrology, Ecology and the 1995 Fish Kills
The Tunasan River is a tributary of Laguna de Bay in the Philippines, known for its medicinal plant etymology and 1990s ecological crises.
Iwahig River: Hydrology and Basin Geography in Palawan
Overview of the Iwahig River in Palawan, its basin topography, soil types, and flooding susceptibility.
Abra River: Hydrology, Infrastructure and the 2022 Earthquake
The Abra River is the 7th largest river system in the Philippines, flowing from Benguet to Ilocos Sur.