Pampanga River
The Pampanga River is the second largest river on the Philippine island of Luzon (after the Cagayan River) and the country's fifth longest river. It runs through the provinces of Pampanga, Bulacan, and Nueva Ecija in Central Luzon.
Its headwaters are in the Sierra Madre, and it flows south and southwest for about 261 kilometers (162 miles) before draining into Manila Bay.
The basin of the river is 10,434 square kilometers (4,029 square miles), including the allied basin of the Guagua River. The basin drains into Manila Bay via the Pampanga River and the Labangan Channel. Its main tributaries are the Pearanda and Coronel-Santor rivers on the basin's eastern side, and the Rio Chico River on the basin's northwest side. The Bagbag River connects the Angat River to the Pampanga River at Calumpit, Bulacan. Mount Arayat (elevation: 1,026 metres (3,366 feet)) dominates the basin.
The Candaba Swamp, located southeast of Mount Arayat and the Pampanga River, absorbs the majority of the flood flows from the western slopes of a portion of the Sierra Madre and the overflowing of the Pampanga River via the Cabiao Floodway. During the rainy season, this area is submerged, but it is relatively dry during the summer.
Length: 270 km (170 mi)
