Agus River

Agus River
Maria Cristina Falls, a prominent geographical landmark on the Agus River
Lake Lanao-Agus River watershed area
Agus River is located in Mindanao
Agus River
Agus River mouth
Agus River is located in Philippines
Agus River
Agus River (Philippines)
Location
CountryPhilippines
Region
Province
Physical characteristics
SourceLake Lanao
 • locationLanao del Sur, BARMM
 • coordinates7°53′31″N 124°15′09″E / 7.89194°N 124.25250°E / 7.89194; 124.25250
 • elevation700 m (2,300 ft)
MouthIligan Bay
 • location
Iligan City, Northern Mindanao
 • coordinates
8°11′50″N 124°11′21″E / 8.19722°N 124.18917°E / 8.19722; 124.18917
 • elevation
0 m (0 ft)
Length36.5 km (22.7 mi)
Basin size1,645 km2 (635 sq mi)
Discharge 
 • locationIligan Bay
 • average10 m3/s (350 cu ft/s)

The Agus River is a river that flows for 36.5 kilometres (22.7 mi)[1][2] from Lake Lanao to Iligan Bay, Philippines. It cuts through the provinces of Lanao del Sur and Lanao del Norte. Settlements along the banks of the river include the city of Marawi, the municipality of Linamon, and the city of Iligan. It separates into two channels as it drains to Iligan Bay; one goes over the Maria Cristina Falls, while the other supplies the Tinago Falls.[3] The river descends for about 2,200 feet (670 m) from its source as it flows for 21 miles (34 km) before draining to the sea. The river is relatively shallow as it is only 4 feet (1.2 m) deep in some areas.[4] The Agus River's watershed spans about 11,320.00 hectares.[5] It has a discharge of about 10 cubic metres per second (350 cu ft/s) and flows from a narrow depression off the northwestern rim of the lake[6] and flows over a basalt rock formation.[7] The canyon carved by the river suggests a short erosional period.[8]

  1. ^ Prof. Geoffrey G. Salgado. "Official Website of the Iligan City Government - Growth of an Industrial City". Iligan City Government. Archived from the original on April 12, 2008. Retrieved March 29, 2008.
  2. ^ "Principal River Basins of the Philippines", Published by the National Water Resources Board, October 1976 (p. 12)
  3. ^ The Haribon Foundation for the Conservation of Natural Resources. "Philippines" (PDF). International Water Management Institute. pp. 69–70. Archived from the original (PDF) on July 17, 2010. Retrieved March 29, 2008.
  4. ^ U.S. Coast and Geodetic Survey (1921). United States Coast Pilot, Philippine Islands... Govt. print. off. p. 134.
  5. ^ "Watershed Areas". Department of Environment and Natural Resources (Philippines). 2006. Archived from the original on April 11, 2008. Retrieved March 29, 2008.
  6. ^ Pendleton, Robert L. (April 1942). "Land Utilization and Agriculture of Mindanao, Philippine Islands". Geographical Review. 32 (2): 180–210. doi:10.2307/210270. JSTOR 210270.
  7. ^ Philippines Bureau of Science. Monograph. p. 207.
  8. ^ Ehrlich, Paul R.; Richard W. Holm; Peter H. Raven (1969). Papers on Evolution. Little, Brown.

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