Ilagan River

Ilagan River (Pinacauan De Ilagan)
River
Ilagan River as it passes through the municipalities of San Mariano (background) and Benito Soliven (foreground).
Country	Philippines
Region	Cagayan Valley
Source	Ilagan River source
- location	Sierra Madre Mountains, Casiguran, Aurora, Central Luzon
- coordinates	PH 16°18′42.47″N 121°59′6.98″E / 16.3117972°N 121.9852722°E
Mouth	Cagayan River
- location	Ilagan, Isabela
- coordinates	PH 17°10′7.75″N 121°53′16.85″E / 17.1688194°N 121.8880139°ECoordinates: PH 17°10′7.75″N 121°53′16.85″E / 17.1688194°N 121.8880139°E
Basin	3,132 km^2 (1,209.27 sq mi)
Discharge	mouth
- average	9,455 m^3/s (333,900.17 cu ft/s) [1]

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 kilometers ^[2] and an estimated annual discharge of 9,455 million cubic meters. It flows westward and joins the Cagayan River at Ilagan City, Isabela.^[1]

Tributaries

Major tributaries of Ilagan River are:

• Abuan River-Originated from the mountains in the Northern Sierra Madre National Park where one of the widest tropical rainforest in the Luzon can be found.
• Bintacan River

Ilagan River at Ilagan City

References

1. "The Cagayan River Basin". ABS-CBNNews.com. Retrieved 20 March 2014.
2. Riverine Zone Development Framework Plan 2005_2030.pdf "Cagayan Riverine Zone Development Framework Plan" Check |url= value (help) (PDF). National Economic and Development Authority-Regional Development Council Region 2. Retrieved 20 March 2014.