Cagayan (river)
| Cagayan | ||
 |
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| Data | ||
| location | Cagayan Valley , Luzon , Philippines | |
| River system | Cagayan | |
| source |
Caraballo Mountains , Central Luzon 16 ° 11 ′ 8 ″ N , 121 ° 8 ′ 39 ″ E |
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| muzzle |
Pacific Ocean at Aparri Coordinates: 18 ° 20 ′ 0 ″ N , 121 ° 37 ′ 0 ″ E 18 ° 20 ′ 0 ″ N , 121 ° 37 ′ 0 ″ E |
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| Mouth height |
0 m
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| length | 505 km | |
| Catchment area | 27,280 km² | |
| Left tributaries | Chico , Magat | |
| Right tributaries | Ilagan, Pinacanauan | |
The Cagayan rises in the Filipino Mountains of the Caraballo Mountains , on the island of Luzon .
Its main tributaries are the Magat, Rio Chico , Ilagan and the Siffu-Mallig. These arise from the Sierra Madre and Cordillera Central mountain ranges in the northern part of the main island of Luzon . At 210 kilometers, the Rio Chico is the longest tributary of the Cagayan and has its source on Mount Data . At its second largest tributary, the Magat , which was Magat Dam hydroelectric power plant built with a capacity of 360 megawatts.
The river flows north, passing Ilagan and Tuguegarao and flowing into the Luzon Strait at Aparri . Overall, the river forms an approximately 190 km long and up to 60 km wide valley, the Cagayan Valley . The Cagayan is the longest river in the Philippines with a length of 505 km. Its water catchment area includes the provinces of Cagayan , Isabella , Quirino , Kalinga , Apayao , Mountain Province , Ifugao and Nueva Vizcaya .
Another river called the Cagayan is located in the south of the Philippines on the island of Mindanao . This rises in the province of Bukidnon and flows into the Mindanao Sea at Cagayan de Oro .
The excavations in the archaeological excavation sites in the Cagayan Valley were able to prove the early presence of humans on the course of the Cagayan river. The findings are among the oldest artifacts in the territory of the Philippines and stand on the proposed list of the Philippines since 2006 for inclusion in the World Heritage List of UNESCO .