The Agusan River is third longest river in the Philippines, located in the north-eastern part of Mindanao island, draining majority of the Caraga region and some parts of Davao de Oro. It is the country's third largest river (after the Cagayan River and Rio Grande de Mindanao) with a total drainage area of 11,937 square kilometres (4,609 sq mi)[2] and an estimated length of 349 kilometres (217 mi) from its origin.[1][3][4]
The headwaters of the river are found in the mountains of Davao de Oro, near its border with Davao Oriental and east of Tagum. It flows through the wide Agusan River valley which measures 177 kilometers (110 mi) from south to north and varies from 32–48 kilometers (20–30 miles) in width.[5] It finally drains into the Butuan Bay at its mouth in Butuan.
One of the prominent features in the Agusan River basin is the presence of the Agusan Marsh covering a total area of 19,197 hectares (47,440 acres). The marsh serves a flood retention basin for the Agusan River, cutting the high discharge of water causing flash floods in the lower reaches of the river. Aside from that, the marsh harbors unique and pristine habitats like the sago and peat swamps forest and is a home to endangered and endemic flora and fauna. As a consequence, it was designated a wildlife sanctuary by then-President Fidel V. Ramos in 1996.[4]
Watershed
The Agusan River basin is divided into three sub-basins on the basis of topographic features: the upper Agusan River basin, the middle Agusan River basin, and the lower Agusan River basin. The upper Agusan River basin is the section from its headwaters in the mountains of Davao de Oro to Santa Josefa, Agusan del Sur to Veruela, Agusan del Sur, the middle Agusan River basin is the section of the river from Santa Josefa to Amparo, Agusan del Sur while the lower Agusan River basin is from Amparo to its mouth at Butuan.
^ abKenneth Kimutai too (July 24, 2018). "Longest Rivers In The Philippines". worldatlas.com. WorldAtlas. Retrieved September 9, 2019.
^ abVicente B. Tuddao Jr. (September 21, 2011). "Water Quality Management in the Context of Basin Management: Water Quality, River Basin Management and Governance Dynamics in the Philippines" (PDF). www.wepa-db.net. Department of Environment and Natural Resources. Retrieved April 10, 2017.
^Kundel, Jim (June 7, 2007). "Water profile of Philippines". Encyclopedia of Earth. from the original on September 21, 2008. Retrieved September 30, 2008.
^ ab(PDF). Asian Development Bank. December 2004. Archived from the original (PDF) on July 13, 2007. Retrieved August 9, 2008.
Media related to Agusan River at Wikimedia Commons
January 20, 2023
agusan, river, third, longest, river, philippines, located, north, eastern, part, mindanao, island, draining, majority, caraga, region, some, parts, davao, country, third, largest, river, after, cagayan, river, grande, mindanao, with, total, drainage, area, sq. The Agusan River is third longest river in the Philippines located in the north eastern part of Mindanao island draining majority of the Caraga region and some parts of Davao de Oro It is the country s third largest river after the Cagayan River and Rio Grande de Mindanao with a total drainage area of 11 937 square kilometres 4 609 sq mi 2 and an estimated length of 349 kilometres 217 mi from its origin 1 3 4 Agusan RiverRio Grande de AgusanThe Agusan River and Magsaysay Bridge in 2019Agusan River drainage basinAgusan River mouthShow map of MindanaoAgusan River Philippines Show map of PhilippinesLocationCountryPhilippinesRegionCaragaDavao RegionProvinceAgusan del SurCities municipalitiesButuanBayuganPhysical characteristicsSourceMount Tagubud Pantukan Davao de Oro locationDavao del Norte elevation1 022 m 3 353 ft MouthButuan Bay locationButuan coordinates9 01 00 N 125 30 40 E 9 01667 N 125 51111 E 9 01667 125 51111 Coordinates 9 01 00 N 125 30 40 E 9 01667 N 125 51111 E 9 01667 125 51111 elevation0 m 0 ft Length349 km 217 mi 1 Basin size11 937 km2 4 609 sq mi 2 Basin featuresTributaries leftUmayam RiverBansa RiverOjot RiverManat RiverBugabos River rightWawa RiverAndanan RiverGibong RiverChoco River in CompostelaUlip River Contents 1 Geography 1 1 Watershed 2 See also 3 References 4 External linksGeography EditThe headwaters of the river are found in the mountains of Davao de Oro near its border with Davao Oriental and east of Tagum It flows through the wide Agusan River valley which measures 177 kilometers 110 mi from south to north and varies from 32 48 kilometers 20 30 miles in width 5 It finally drains into the Butuan Bay at its mouth in Butuan One of the prominent features in the Agusan River basin is the presence of the Agusan Marsh covering a total area of 19 197 hectares 47 440 acres The marsh serves a flood retention basin for the Agusan River cutting the high discharge of water causing flash floods in the lower reaches of the river Aside from that the marsh harbors unique and pristine habitats like the sago and peat swamps forest and is a home to endangered and endemic flora and fauna As a consequence it was designated a wildlife sanctuary by then President Fidel V Ramos in 1996 4 Watershed Edit The Agusan River basin is divided into three sub basins on the basis of topographic features the upper Agusan River basin the middle Agusan River basin and the lower Agusan River basin The upper Agusan River basin is the section from its headwaters in the mountains of Davao de Oro to Santa Josefa Agusan del Sur to Veruela Agusan del Sur the middle Agusan River basin is the section of the river from Santa Josefa to Amparo Agusan del Sur while the lower Agusan River basin is from Amparo to its mouth at Butuan See also EditList of rivers of the PhilippinesReferences Edit a b Kenneth Kimutai too July 24 2018 Longest Rivers In The Philippines worldatlas com WorldAtlas Retrieved September 9 2019 a b Vicente B Tuddao Jr September 21 2011 Water Quality Management in the Context of Basin Management Water Quality River Basin Management and Governance Dynamics in the Philippines PDF www wepa db net Department of Environment and Natural Resources Retrieved April 10 2017 Kundel Jim June 7 2007 Water profile of Philippines Encyclopedia of Earth Archived from the original on September 21 2008 Retrieved September 30 2008 a b Technical Assistance To The Republic of the Philippines For A Master Plan For the Agusan River Basin PDF Asian Development Bank December 2004 Archived from the original PDF on July 13 2007 Retrieved August 9 2008 Plains of MindanaoExternal links Edit Media related to Agusan River at Wikimedia Commons Retrieved from https en wikipedia org w index php title Agusan River amp oldid 1129442744, wikipedia, wiki, book, books, library,
