5 Longest River in the Philippines | Philippine Attractions 5 Longest River in the Philippines by marvelynquiobe22 Philippine Longest Rivers 1.) Cagayan River – 505 kmRio Grande de Cagayan or simply Cagayan River, with a total length of 505 kilometers, is the longest and widest river in the Philippines. This great river of great economic importance bisects the Cagayan Valley from north to south. Also considered as the mightiest watercourse, Cagayan River sources its water from smaller rivers and streams in the 3 most popular mountain ranges in the country namely; Sierra Madre, Caraballo and Cordillera. Image Source As already mentioned above, Cagayan River is the country’s largest and longest river. It is situated in the most prominent and productive valley in the archipelago – the Cagayan Valley. The headwaters of Cagayan River are at the Caraballo Mountains in Central Luzon more than 1,500 meters above sea level. Cagayan River has a drainage area of about 27,300 km².

2.) Mindanao River – 373 km Image Source Mindanao River or Rio Grande de Mindanao is the country’s second largest river system. The river is Mindanao’s 2nd largest river and has a drainage area of 23,169 km². It is also the second longest Philippine river with a length of 373 km. 3.) Magat River – 353 km Image Source Magat River is one of the most popular rivers in the Philippines. It is located in Luzon and is the largest tributary of Cagayan River, the country’s longest and largest river system. Magat River has an estimated drainage area of 5, 110 km² and the Magat River Integrated Irrigation System Project is one of the largest irrigation projects in the Philippines. It is 353 km in length. 4.) Agusan River – 350 km Agusan River in Mindanao’s eastern part has a total drainage area of 10,921 km² and an estimated length of 350 kilometers from its origin. The headwaters of the Agusan River are found in the mountains of Compostela Valley.

5.)Pampange River Pampanga River, which is formerly known as Rio Grande de Pampanga or Great River of Pampanga, is the Philippines 2nd largest river. Pampanga River‘s headwaters are located at the Sierra Madre and has a total length of 260 km and has a river’s basin that covers an area of 10,540 km². Cagayan River: The Longest and Largest River in the Philippines Greek-inspired Structures of Batangas Cagayan River: The Longest and Largest River in the Philippines The Cagayan River, also known as the Rio Grande de Cagayan, is the longest, largest and widest river in the coutry. It is located in the Cagayan Valley region in the northeastern part of Luzon island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan. by Kheem Caparas on June 19, 2012 The Cagayan River, also known as the Rio Grande de Cagayan, is the longest, largest and widest river in the coutry.

It is located in the Cagayan Valley region in the northeastern part of Luzon island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan. Small streams originating from Balete Pass, Cordillera, Caraballo and Sierra Madre Mountains meet other streams and rivers and flow to the Cagayan River. The famous "lurung" fish abound in this river during the rainy season when the river is murky and the fish swim upstream from the delta of Aparri to spawn. The river passes through one of the few remaining primary forests in the country and its biodiversity is truly remarkable. The river supports the lives of numerous endemic and endangered species, like the Luzon bleeding-heart pigeon (Gallicolumba luzonica), Philippine eagle (Pithecophaga jefferyi) and a rare riverine fish called ludong (Cestreaus plicatilis). The location of the mouth of the river covers the Babuyan Channel, Cagayan, and empties at the Aparri Estuary. The river drains a fertile valley that produces a variety of crops, including rice, corn, banana, coconut, citrus and tobacco.

Its tributaries include the Chico River, Magat River, Ilagan River, and Pinacanauan River The provincial governments have developed tourism programs that offer sports and liesure activities on the river. Activities: Cagayan River | river, Philippines | Britannica.com Cagayan River Alternative Title: Río Grande de Cagayan Similar Topics Narmada River Cagayan River, also called Río Grande De Cagayan, longest stream in Luzon , Philippines . It begins its 220-mile (350-kilometre) course in a twisting pattern in the Sierra Madre in northeastern Luzon. It then flows north into a 50-mile- (80-kilometre-) wide fertile valley that is important for the cultivation of rice and tobacco. Ilagan, Isabela, Tuguegarao, and Cagayan are major riverine towns. At Aparri , the Cagayan enters the ocean at Babuyan Channel of the Luzon Strait . The Chico, Magat, and Ilagan rivers are its main tributaries. Learn More in these related articles: Corrections? Updates? Help us improve this article! Contact our editors with your feedback.

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Please try again later. Close Date Published: July 20, 1998 URL: Access Date: January 19, 2017 Share Cagayan | Cagayan Valley Region Home Cagayan Cagayan Province lies on the northeastern most part of Luzon mainland occupying the lower basin of the Cagayan River. It is bounded on the east by the Pacific Ocean, on the west by the Cordilleras, on the south by the province of Isabela and on the north by the Babuyan Channel. It is well traversed by many rivers, with Abulug and Cagayan Rivers as the largest. The province comprises an aggregate land area of 9,003 square kilometers, which constitutes three percent of the total land area of the country and is the second largest province in the region. The Spanish Friars notably the Dominicans, brought Western culture to Cagayan. According to Fr. Francisco Rojano, the great chronicler of the province, Cagayan got its name from the Ilocano word “karayan” or river referring to the Rio Grande de Cagayan. The early Spanish settlers also called it “Rio Ibanag”.

The river runs from south in Quirino to the north bisecting the whole valley. In June 29, 1583, Don Juan de Salcedo traced the northern coastline of Luzon and set foot on the Massi, Tular and Aparri areas. The Spanish Friars soon established mission post in Camalaniugan and Lallo, which became the seat of Cuidad Nueva Segovia established on August 14, 1595. The Spanish influence can still be seen in the massive churches and other buildings that the Spaniards built for the spiritual and social welfare of the people. With the Treaty of Paris signed in 1898, ending the war between Spain and the United States of America took over the Philippines and enriched the culture notably in agriculture and education and also in public works and communications. Commerce and trade flourished with the construction of roads and bridges linking the various towns of the province. The Japanese forces occupied Cagayan from December 1941 to July 1945, until the Philippines got its independence in 1946. Cagayan today is the Regional Seat.

Tuguegarao City, the capital, is the seat of commerce and trade and center for learning. The province has the largest marine fishing grounds and 73 percent of the region’s potential fishpond area. Known as the spelunkers’, trekkers’ and gamefishers’ paradise rolled in one, Cagayan provides a never-ending adventure. The province is now being promoted as an adventure and eco-tourism destination. Both foreign and local tourists continue to explore its caves, engage in game fishing expeditions, trek its mighty mountains and retreat to its centuries- old churches. Travel to the province is a never-ending adventure. Daily flights are provided by Cebu Pacific and Air Philippines from Manila while local airline companies also provide short flights to Maconacon and Palanan in Isabela as well as in Basco, Batanes. Various bus companies from Manila and the Ilocos Region have lines to Cagayan Valley Region, while public utility jeepneys, buses, tricycles and calesas (horse-drawn carriage) are the common mode of transportation for short leisurely trips. CAGAYAN 01. The seven-chambered CALLAO Cave boasts of massive limestone formations, skylights and a chapel.

Its cave entrance is accessible by climbing the 184-cemented steps. After caving, try cruising the Pinacanauan River. It is conducive for kayaking, boating and swimming while the mountains on its sides are perfect for trekking and mountaineering. The daily phenomenon of the circadian flight of insect-eating bats from a bat cave occur at dusk enthralling visitors. 02. The JACKPOT Cave is currently the SECOND DEEPEST cave in the country with a surveyed depth of about 115.0 meters and a surveyed length of 355.0 meters. The cave is recommended for professionals and with assistance from the Sierra Madre Outdoor Club (SMOC). 03. ODESSA- TUMBALI Cave System is acknowledged to be a true cave system, having multiple entrances and widespread plan shape. It could be the LONGEST CAVE in the country at 12.6kms. A relatively shallow-through river cave, it is excellent for wet sport caving. The cave is recommended for professionals and with assistance from the Sierra Madre Outdoor Club (SMOC). 04.

SIERRA CAVE has two entrances; one for tourists and another one for acknowledged cavers. The biggest challenge is crawling through a very low and narrow opening called “Celica’s Passage”. Attractions include flowstones, columns and draperies. The cave is a low-impact cave and needs the assistance of guides from SMOC and Department of Environment and Natural Resources, Region 2 (DENR-R2). 05. The SAN CARLOS CAVE is probably the toughest cave the Philippines could offer. When inside the cave, spelunkers will learn the art of cave crawling. A chamber called “ice Cream Parlor” contains cluster of white stalagmites that resemble scooped ice cream. The “John the Baptist” chamber is a sump that one has to take a deep breath and swim to the other side of the chamber. Sharp and rough stones could scratch skin and tear clothing. San Carlos requires a lot of swimming because more than half the cave is covered by cold running subterranean river. The cave is recommended for professionals and with assistance from the Sierra Madre Outdoor Club (SMOC). 06. STA. ANA is 158 kilometers from Tuguegarao City. Sta.

Ana caters to the participants of the Philippine Game Fishing Competition which is being staged yearly along Susay Rock and other parts of the Babuyan Channel. Also in Sta. Ana is the Cagayan Special Economic Zone Authority and Free Port (CEZAFP). Also in Sta. Ana is the PALAUI ISLAND which is home to the Cape Engano Lighthouse which dates back to the Spanish Regime and is the only existing lighthouse in the northeastern coast. It has been declared a National Cultural Treasure. Palaui Island has white sand and pebble beach, rich marine resources and almost raw, uncontaminated environs. It has been declared under coastal environment protection. The giant news network CNN has listed Palaui Island on No. 10 (the only Southeast Asian beach in the top 10) of its list of the best 100 beaches in the world. 07. WIDE EXPANSE OF BLACK FINE SAND BEACHES sprawling along the coastal towns of Sanchez Mira, Sta. Praxedes, Abulug, Ballesteros, Aparri, Buguey, Gonzaga, and Pamplona and the white sand beaches of Fuga and the Babuyan Group of Islands.

08. CLAVERIA beach offers a long stretch of black fine sand beach plus the Taggat Lagoon with rustic beauty featuring fishing boats. Stories of the Legend of the Lakay-Lakay, Baket-Baket and Ubing-ubing are interesting. Within the area is the Hatchery for High Value Species of Marine Products operated by the Bureau of Fisheries and Aquatic Resources (BFAR) which is open to the public for viewing and educational trips. 09. BASILICA MINORE OF OUR LADY OF PIAT (The Lady of the Visitation) is located 35 kilometers from Tuguegarao City. It was originally called the Lady of the Holy Rosary, perhaps because the devotees of the Rosary, the Dominican Friars, supposedly brought it from Macao to the Philippines in 1604. This more than four-centuries old image was first enshrined in Nueva Segovia now called Lallo. The image is famous in the country and abroad as the Black Mary making Piat the Pilgrimage Center in the Cagayan Valley Region. 10. ST. PHILOMENE CHURCH in Alcala is the widest brick church in the province.

Located along the Maharlika Highway, it stands as a mute witness to the several regimes that have enriched the province’s cultural heritage. Alcala town is also famous for its carabao milk candy. 11. SANTA MARIA BELL in San Jacinto de Polonia Church in Camalaniugan is said to be the oldest bell in the Far East. Forged in 1595, it was brought to Manila in February 1937 as part of the attractions during the 33 rd International Eucharistic Congress. Camalaniugan town is 93.6 kilometers from TuguegaraoCity and about 20 kilometers from Aparri. 12. CAGAYAN RIVER is the Philippines’ mightiest watercourse – the longest at about 400 kilometers and widest river in the country. Three major tributaries – Ilagan River, Magat River and Chico River meet other streams and flow to the Cagayan River. The famous “lurung” fish abound in the river during the rainy season when the river is murky and the fishes swim upstream from the delta at Aparri to spawn. It empties at the Aparri estuary.

13. MAGAPIT HANGING BRIDGE in Lallo town is 72 kilometers from Tuguegarao City. It is the first of its kind in Asia and serves as the gateway to the Ilocos Region through the Cagayan-Ilocos Norte inter- provincial highway. Lallo town is also home to the St. Dominic Spanish Colonial Church, the former seat of “Ciudad Nueva Segovia”. Ciudad Nueva Segovia is featured in the annals of Philippine History as one of the four oldest cities in the country. 14. ST. JAMES PARISH CHURCH and the IGUIG CALVARY HILLS is 16 kilometers from Tuguegarao City. In the eleven- hectare rolling hills are the larger-than –life size concrete 14 Stations of the Cross depicting Jesus Christ’s suffering before His death on Mount Calvary. All roads lead to Iguig town during the Holy Week for their devotion. The place also features a three- centuries- old well, a Dominican convent ruin and the scenic view of the Cagayan River, a setting of which resembles that of the River Jordan. 15.

CARSUMCO or the Cagayan Robina Sugar Milling Corporation is located at Sto. Domingo, Piat which is 20 kilometers from Tuguegarao. Around it are thousands of hectares of sugarcane plantations. 16. FR. GERRY Z. FILIPPETTO, OFP MEMORIAL MUSEUM in Sta. Ana, Cagayan was established to honor the founder of the Franciscan Apostolic Sisters based in Sta. Ana, Cagayan. Religious articles, personal belongings as well as the history of the Franciscan Apostolic Sisters are displayed for viewing. Pope John Paul II has granted special privileges to the congregation of the Franciscan Apostolic Sisters for their apostolic and social work in the country and abroad. 17. PORTABAGA FALLS in Sta. Praxedes is one of the tallest falls in Cagayan. Approximately 15 meters in height, it has manmade pools and picnic huts for excursionists as well as accommodation facilities for nature-lovers. Sta.Praxedes is 194 kilometers from Tuguegarao City and is about 100 meters from the highway. 18.

APARRI DELTA is an impressive expanse of land that is Aparriwhere one can see the Cagayan River meet with the Babuyan Channel. Walk into the jetty to find the estuary of Cagayan River. The jetty was once one of the oldest ports of call during the Spanish Galleon Trade in the country. Drop by and shop for marine products at the Aparri market. 19. CALAYAN ISLAND is a destination for nature and adventure lovers; its waters – the Babuyan Channel and Balintang Channel is home to dolphins and whales. Still in its rare untouched form, the island is best visited during summer for adventure and nature tripping, an island get-away with similar offerings like Batanes. The island is accessible by boat from Aparriusing the Eagle Ferry, contact 0939-921-6181. 20. ST. RAYMUND DE PEÑAFORT in the town of Rizal is a Natural Cultural Treasure under the Diocese of Tuguegarao. Built in the 1600’s, the church was built in the foothills of the Cordilleras.

The rough stonework shows the early technology of that time while its retablo is a composite of parts from its earlier baroque altar pieces. Malaueg Church, now Rizal Church possesses the most character and its ruins the most enigmatic in the Province of Cagayan. 21. ST. CLAIRE MONASTERY in Iguig located about 200 meters from the Maharlika Highway immediately outside Tuguegarao City. It is a contemplative community of Poor Claire Sisters from Cabuyao, Laguna established in 1991 and is open to the public. 22. CAGAYAN MUSEUM AND HISTORICAL RESEARCH CENTER located at the Provincial Capitol Compound, is the first museum established in the country. It features several archaeological and religious artifacts vital to Philippine History. It also houses the exact replica of the oldest human remains found at Callao Cave Ecotourism Zone which makes Cagayan as the Cradle of the Filipino Civilization.

Transparency Seal Pinacanauan River: The Largest Tributary of Cagayan River Greek-inspired Structures of Batangas Pinacanauan River: The Largest Tributary of Cagayan River The Cagayan Valley is said to be one of the most fertile lands in the Philippines, owing this distinction to its many rich and beautiful rivers like the serene and crystal clear Pinacanauan River, which is truly a sight to behold. by Jhaypee Guia on May 14, 2012 The Cagayan Valley is said to be one of the most fertile lands in the Philippines, owing this distinction to its many rich and beautiful rivers like the serene and crystal clear Pinacanauan River, which is truly a sight to behold. Pinacanauan River is one of the largest tributaries of the Cagayan River, the longest, widest and most powerful river in the Philippines. Its name comes from the local term pinacanauan, which means “left-most.” It is found in the southeast of Cagayan Province in the municipality of Peñablanca in Cagayan Valley.

Along with other rivers, it drains the agricultural plains of Cagayan Valley and serves as a water source for irrigation and other purposes. With its clear waters and beautiful natural setting, it is one of the tourist attractions of Cagayan Province. The tributary is found in the Callao Caves National Park in Peñablanca. A tourist zone, Callao Caves National Park features large rock formations and caves as well as Pinacanauan River. Wild lilies grow abundantly in this green area. With its class I and II rapids, Pinacanauan River is a popular site for whitewater rafting and kayaking as well as for boating and swimming. The area around the river is surrounded by mountains which are suitable for hiking, climbing, and spelunking. Every year on April 21, a boat rowing race known as Bankarera takes place on the river. How to get there From Manila, buses and planes have daily trips to Tuguegarao City, the provincial capital. From there, public transportation like jeepneys or rented vehicles can take you to Pinacanauan River and other sights the province has to offer.

Rating: About: Magat River About: Magat River An Entity of Type : natural place , from Named Graph : , within Data Space : dbpedia.org Magat River is a river in the Philippine island of Luzon. It is the largest tributary of Cagayan River, the longest and largest river system in the country, with an estimated drainage area of 5, 110 km², roughly twenty percent of the total drainage area of the river. Property abstract El Río Magat es un río en la isla filipina de Luzón. Es el mayor afluente del Río Grande de Cagayán, el sistema fluvial más largo y más grande del Archipiélago, con un área de drenaje estimado de 5.110 km², casi el veinte por ciento del total del área de drenaje del mencionado río. (es) Der Magat (eng.: Magat River) ist ein Fluss auf der Insel Luzon auf den Philippinen. Er ist ein Nebenfluss des Cagayan und durchfließt die Provinzen Nueva Vizcaya, Ifugao und Isabela.

Der Magat hat eine Länge von 178 km und ein Wassereinzugsgebiet von 4638 km². Der Magat entspringt in den Caraballo-Bergen in einer Höhe von 1200 Metern. Er bildet die geographische Grenze zwischen der Cordelliera Central und den Caraballo-Bergen. Ab seiner Quelle, in der Gemeinde Santa Fe, fließt der Magat in nordöstliche Richtung in einem weiten Flusstal, in dem sich auf dem Gebiet der Gemeinden Ramon und Alfonso Lista der Magat-Stausee befindet. Der Fluss mündet in der Nähe der Gemeinden Gamu und Reina Mercedes in den Cagayan. An seinem Flusslauf befinden sich ein großes und zwei kleinere Wasserkraftwerke. (de) Magat River is a river in the Philippine island of Luzon. It is the largest tributary of Cagayan River, the longest and largest river system in the country, with an estimated drainage area of 5, 110 km², roughly twenty percent of the total drainage area of the river.

(en) Confluence of Magat River with Cagayan River in Gamu, Isabela (en) comment El Río Magat es un río en la isla filipina de Luzón. Es el mayor afluente del Río Grande de Cagayán, el sistema fluvial más largo y más grande del Archipiélago, con un área de drenaje estimado de 5.110 km², casi el veinte por ciento del total del área de drenaje del mencionado río. (es) Magat River is a river in the Philippine island of Luzon. It is the largest tributary of Cagayan River, the longest and largest river system in the country, with an estimated drainage area of 5, 110 km², roughly twenty percent of the total drainage area of the river. (en) Der Magat (eng.: Magat River) ist ein Fluss auf der Insel Luzon auf den Philippinen. Er ist ein Nebenfluss des Cagayan und durchfließt die Provinzen Nueva Vizcaya, Ifugao und Isabela.

Der Magat hat eine Länge von 178 km und ein Wassereinzugsgebiet von 4638 km². (de) Cagayan River – Longest River in the Philippines | Ralph Cagayan River – Longest River in the Philippines ⋅ 1 Comment The Cagayan River is the longest and largest river in the Philippine Archipelago. It is located in the Cagayan Valley region in northeastern part of Luzon island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan. The river’s headwaters are at the Caraballo Mountains of the Central Luzon at an elevation of approximately 1,524 meters. The river flows north for some 505 kilometersto its mouth at the Babuyan Channel near the town of Aparri, Cagayan. The river drops rapidly to 91 meters above sea level some 227 kilometers from the river mouth. Its principal tributaries are the Chico, Siffu, Mallig, Magat and Ilagan Rivers.

Cagayan River Magat River is the largest tributary with an estimated annual discharge of 9,808 million cubic meters. It lies in the southwestern portion of the basin, stretching approximately 150 kilometers from Nueva Vizcaya down to its confluence with Cagayan River about 55 kilometers from the river mouth. Magat Dam Both Magat and Chico Rivers have extensive drainage areas which comprise about 1/3 of the whole basin. The Ilagan River originates from the western slopes of the Sierra Madre and drains the eastern central portion of the Cagayan River basin with an estimated yearly discharge of 9,455 million cubic meters. It flows westward and joins the Cagayan River at Ilagan, Isabela, 200 kilometers from the mouth. The Siffu-Mallig system lies on the slope of the Central Cordillera ranges flowing almost parallel to the Magat River. Marshes and swamps are found in some parts of its lower reaches.

Cagayan River and its tributaries have deposited sediments of Tertiary and Quaternary origin, mostly limestone sands and clays, throughout the relatively flat Cagayan Valley which is surrounded by the Cordillera Mountains in the west, Sierra Madre in the east and the Caraballo Mountains in the south. The river has a drainage area of about 27,300 km². in the provinces of Apayao, Aurora, Cagayan, Ifugao, Isabela, Kalinga, Mountain Province, Nueva Vizcaya, and Quirino. The estimated annual discharge is 53,943 million cubic meters with a groundwater reserve of 47,895 million cubic meters. The Pinacanauan River, seen just below the Callao Caves, is one of the major tributaries of the Cagayan River. The Cagayan River passes through one of the few remaining primary forests in the Philippines.

It supports the lives of numerous endemic and endangered species, like the Luzon bleeding-heart pigeon (Gallicolumba luzonica), Philippine eagle (Pithecophaga jefferyi) and a rare riverine fish, locally called ludong (Cestreaus plicatilis). The ludong spawns in Cagayan River’s upper reaches in Jones, Isabela. In late October until mid-November, the fish travel down the river to release their eggs at the river mouth near Appari. In February, ludong fry by the millions are again caught in fine nets as these travel upstream. Due to the dwindling number of ludong caught yearly, local governments have imposed a ban on catching the fish and its fry, but the ban has failed. The river traverses four provinces: Nueva Vizcaya, Quirino, Isabela and Cagayan. These provinces have an approximate population of two million people, mostly farmers and indigenous tribesmen. The Ibanag people derive their tribe’s name from Cagayan River’s ancient name, Bannag. The Gaddang tribe lived in the upper riches of the Cagayan River and its tributaries.

The river drains a fertile valley that produces a variety of crops, including rice, corn, bananas, coconut, citrus and tobacco. There are dams in two of the river’s tributaries, the Magat and Chico Rivers, and there are also several mining concessions in the mineral-rich Cordillera Mountains near the headwaters of the two tributary rivers. To visit the Cagayan River, you may contact R2 Adventures and Travel at (02) 891-9929 or email region2adventures@gmail.com Share this: One thought on “Cagayan River – Longest River in the Philippines” huuuu cagayan is beautiful place What are the major rivers in the Philippines? | Reference.com What are the major rivers in the Philippines? A: Quick Answer The major rivers in the Philippines are the Cagayan River, Rio Grande de Mindanao and the Agusan River. The country has a total of 421 rivers, but scientists consider 50 of them biologically dead. Full Answer The longest river in the Philippines is the Cagayan River.

It is 314 miles long and is on the island of Luzon, which is in the northern section of the country. The Cagayan River is prone to flooding, specifically during heavy rains. The Cagayan River flows from the Caraballo Mountains to the Babuyan Channel. The second largest river is the Rio Grande de Mindanao, which is located in the southern portion of the Philippines on the island of Mindanao. Locals use the river to transport agricultural goods, as well as timber. The Rio Grande de Mindanao begins at the Impasug-ong mountains and ends at the Moro Gulf. In the east lies the Agusan River, which begins at the Compostela Valley and flows into the Bhutan Bay. It is the third largest river in the Philippines. Much peat and sago is found in and near this river and it is home to migratory ducks, who also live in the adjacent lakes. The Agusan is prone to flash floods during periods of heavy rain. Cagayan River - The Full Wiki The Full Wiki More info on Cagayan River Wikis Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article!

This article doesn't yet, but we're working on it! See more info or our list of citable articles . Related top topics Rio Grande de Cagayan, Ilog ng Kagayan River The Pinacanauan River, seen just below the Callao Caves, is one of the major tributaries of the Cagayan River. Country Mouth of the Cagayan River - location 25,649 km2 (9,903 sq mi ) Drainage area of the Cagayan River and its tributaries on the island of Luzon , Philippines The Cagayan River is the longest and largest river in the Philippine Archipelago . [1] It is located in the Cagayan Valley region in northeastern part of Luzon island and traverses the provinces of Nueva Vizcaya , Quirino , Isabela and Cagayan . Contents 8 External links Topography The river's headwaters are at the Caraballo Mountains of the Central Luzon at an elevation of approximately 1,524 meters. The river flows north for some 505 kilometers [2] to its mouth at the Babuyan Channel near the town of Aparri , Cagayan .

The river drops rapidly to 91 meters above sea level some 227 kilometers from the river mouth. Its principal tributaries are the Chico, Siffu, Mallig, Magat and Ilagan Rivers. Magat River is the largest tributary with an estimated annual discharge of 9,808 million cubic meters. It lies in the southwestern portion of the basin, stretching approximately 150 kilometers from Nueva Vizcaya down to its confluence with Cagayan River about 55 kilometers from the river mouth. Both Magat and Chico Rivers have extensive drainage areas which comprise about 1/3 of the whole basin. The Ilagan River originates from the western slopes of the Sierra Madre and drains the eastern central portion of the Cagayan River basin with an estimated yearly discharge of 9,455 million cubic meters. It flows westward and joins the Cagayan River at Ilagan, Isabela , 200 kilometers from the mouth. The Siffu-Mallig system lies on the slope of the Central Cordillera ranges flowing almost parallel to the Magat River. Marshes and swamps are found in some parts of its lower reaches.

Cagayan River and its tributaries have deposited sediments of Tertiary and Quaternary origin, mostly limestone sands and clays, throughout the relatively flat Cagayan Valley which is surrounded by the Cordillera Mountains in the west, Sierra Madre in the east and the Caraballo Mountains in the south. The river has a drainage area of about 27,300 km². in the provinces of Apayao , Aurora , Cagayan, Ifugao , Isabela, Kalinga , Mountain Province , Nueva Vizcaya, and Quirino. The estimated annual discharge is 53,943 million cubic meters with a groundwater reserve of 47,895 million cubic meters. Flooding The Cagayan River and its tributaries are subject to extensive flooding during the monsoon season in Southeast Asia from May to October. The average annual rainfall in 1,000 mm in the northern part and 3,000 mm in the southern mountains where the river's headwaters lie.

Water from the mountains flow down very slowly because of surface retention over the extensive flood plain, the gorges in the gently-sloping mountains and the meandering course of the river. The inundation of the Cagayan River and its tributaries have caused great loss of life and property and substantial losses to the local and national economies. The Philippine government has established several flood warning stations along the river. Experts are specifically monitoring the lower reaches from Tuguegarao to Aparri and the alluvial plain from Ilagan to Tumauini, Isabela . Flora and fauna The Cagayan River passes through one of the few remaining primary forests in the Philippines. It supports the lives of numerous endemic and endangered species, like the Luzon bleeding-heart pigeon ( Gallicolumba luzonica ), Philippine eagle ( Pithecophaga jefferyi ) and a rare riverine fish, locally called ludong (Cestreaus plicatilis). The ludong spawns in Cagayan River's upper reaches in Jones, Isabela . In late October until mid-November, the fish travel down the river to release their eggs at the river mouth near Appari.

In February, ludong fry by the millions are again caught in fine nets as these travel upstream. Due to the dwindling number of ludong caught yearly, local governments have imposed a ban on catching the fish and its fry, but the ban has failed. People The river traverses four provinces: Nueva Vizcaya , Quirino , Isabela and Cagayan . These provinces have an approximate population of two million people, mostly farmers and indigenous tribesmen. The Ibanag people derive their tribe's name from Cagayan River's ancient name, Bannag. The Gaddang tribe lived in the upper riches of the Cagayan River and its tributaries. An old drawn geographical description of Cagayan River (Juan Luis de Acosta, Circa 1720) Economic importance The river drains a fertile valley that produces a variety of crops, including rice, corn, bananas, coconut, citrus and tobacco. There are dams in two of the river's tributaries, the Magat and Chico Rivers, and there are also several mining concessions in the mineral-rich Cordillera Mountains near the headwaters of the two tributary rivers.

The provincial governments along the river have also developed tourism programs that offer activities on the river, particularly whitewater rafting. References ^ Kundel, Jim (June 7, 2007). "Water profile of Philippines" . Encyclopedia of Earth. #River_Basins_and_Water_Resources . Retrieved 2008-09-30. ^ "Principal River Basins of the Philippines", Published by the National Water Resources Board, October 1976 (p. 12) Further reading Wernstedt, F. L., and J. E. Spencer (1967). The Philippine Island World. Berkeley and Los Angeles: University of California Press. External links

Question: The Cagayan River is the largest river in which country?
Answer: Philippines