| Ilagan River | |
|---|---|
 The Ilagan River as it passes through the municipalities of San Mariano (background) and Benito Soliven (foreground). | |
.svg.png.webp)  Ilagan River mouth .svg.png.webp) Ilagan River (Philippines) | |
| Native name | Pinacauan De Ilagan (Ilocano) |
| Location | |
| Country | Philippines |
| Region | Cagayan Valley |
| Province | Isabela |
| Physical characteristics | |
| Source | Sierra Madre mountains |
| • location | Casiguran, Aurora, Central Luzon |
| • coordinates | 16°18′42.47″N 121°59′6.98″E / 16.3117972°N 121.9852722°E |
| Mouth | Cagayan River |
• location | Ilagan, Isabela |
• coordinates | 17°10′7.75″N 121°53′16.85″E / 17.1688194°N 121.8880139°E |
| Length | 189 km (117 mi) |
| Basin size | 3,132 km2 (1,209 sq mi) |
| Discharge | |
| • average | 270 m3/s (9,500 cu ft/s)[1] |
| Basin features | |
| Progression | Ilagan River – Cagayan River |
| Tributaries | |
| • right |
|
The Ilagan River is a river in the province of Isabela, Cagayan Valley, Philippines. It is one of the major tributaries of the Cagayan River, the largest river in the Philippines. The Ilagan River originates from the western slopes of the Sierra Madre and drains the eastern central portion of the Cagayan River basin. It has an estimated catchment basin size of 3,132 square kilometres (1,209 sq mi)[2] and an estimated annual discharge of 9,455 million cubic meters/s. It flows westward and joins the Cagayan River at Ilagan City, Isabela.[1]
Tributaries
The Ilagan River at Ilagan City
The major tributaries of Ilagan River are:
- Abuan River – originates from the mountains in the Northern Sierra Madre National Park where one of the widest tropical rainforests in the Luzon can be found.
- Bintacan River
References
- 1 2 "The Cagayan River Basin". ABS-CBNNews.com. Retrieved 20 March 2014.
- ↑ "Cagayan Riverine Zone Development Framework Plan". National Economic and Development Authority-Regional Development Council Region 2. Retrieved 20 March 2014.
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