 | This article needs additional citations for verification. (February 2022) |
| Marikina River | |
|---|---|
 Marikina River in Marikina | |
 Drainage map of the Pasig-Marikina River River system | |
.svg)  Marikina River mouth .svg) Marikina River (Philippines) | |
| Native name | Ilog ng Marikina (Tagalog) |
| Location | |
| Country | Philippines |
| Region | |
| Physical characteristics | |
| Source | Sierra Madre mountains |
| • location | Rodriguez, Rizal |
| Mouth | Pasig River |
• location | Pasig |
• coordinates | 14°33′30″N 121°04′05″E / 14.55833°N 121.06806°E |
• elevation | 0 m (0 ft) |
| Length | 78 km (48 mi) |
| Basin size | 680 km2 (260 sq mi) |
| Discharge | |
| • maximum | 160 m3/s (5,700 cu ft/s) |
| Basin features | |
| Progression | Marikina–Pasig |
 | |
The Marikina River (Tagalog: Ilog Marikina) is a river in eastern Metro Manila, Philippines. It is the largest tributary of the Pasig River, with headwaters located in the Sierra Madre Mountains in Rodriguez, Rizal province.
The Marikina River used to be an important transport route during the Spanish colonial era, but its importance as a transport route diminished when the Philippines' national highway system became more established. The resulting lack of river boat traffic and the deforestation of the upland areas in what is now the Upper Marikina River Basin Protected Landscape contributed to the river's siltation, further reducing its value as a transport route.[1]
Due to negligence and industrial development, the river has become very polluted, something that recent Marikina administrations have attempted to address. According to a 2003 pollution report by the Department of Environment and Natural Resources, the Pasig River and Marikina River are both biologically dead.[2]
- ^ Scott, William Henry (1994). Barangay: Sixteenth Century Philippine Culture and Society. Quezon City: Ateneo de Manila University Press. ISBN 971-550-135-4.
- ^ Tandoc, Edson C. Jr. (April 11, 2005). "Pasig Rehabilitation Program: BF says Marikina River is key". Philippine Daily Inquirer – via Google Newspapers.