Ipo Dam

Ipo Dam
Ipo Dam
	View of Ipo Dam from San Mateo, Norzagaray, Bulacan.
Official name	Ipo Dam
Location	Barangay San Mateo, Norzagaray, Bulacan, Philippines
Coordinates	14°52′N 121°09′E
Construction began	1935
Opening date	December 1938; January 1984
Operator(s)	Metropolitan Waterworks and Sewerage System
Dam and spillways
Impounds	Angat River
Reservoir
Creates	Ipo Reservoir
Total capacity	7.5×106 m3 (260×106 cu ft)

Ipo Dam is a gravity concrete water reservoir dam found in the Philippines. The dam is located about 7.5 kilometres downstream of the Angat Dam within the Angat Watershed Forest Reserve in Norzagaray, Bulacan province. It was a part of the Angat-Ipo-La Mesa water system. Its normal level is 101 m.

The Ipo Dam is a gravity concrete dam located about 7.5 kilometres downstream of the Angat Dam near its confluence with the Ipo River in Bulacan. It was completed in January 1984 with a maximum storage capacity of 7.5 million cubic metres, an increase of about 2,500 million litres per day (MLD) from the old Ipo Dam, which was completed in December 1938, used to be located 200 metres upstream of the new dam.

The spill level of the dam is at an elevation of 101 metres and it has seven radial floodgates. The watershed topography is characterised by mountainous terrain similar to the Angat Reservoir Watershed with moderate forest cover. The watershed has an area of about 70 square kilometers and receives an average annual rainfall of 3,500 millimeters. Tributaries to the Angat River at this section include the Ipo, Sapa Pako and Sapa Anginon Rivers. These tributaries drain into the Angat River from the eastern section of the watershed.

Water from the dam is diverted to the Novaliches Portal and the La Mesa Dam through three intake structures going down to three connecting tunnels into five connecting aqueducts.

Battle of Ipo Dam

On 19 May 1945, during WWII, the dam was captured in the Battle of Ipo Dam. "Marking's Guerrillas" Yay Regiment, under the command of Col. Marcos V. Agustin, and the 43rd Division, supported by the Fifth Air Force, captured the water source intact from the Japanese defenders.[1]

gollark: And that deleted his messages.

gollark: He didn't break any rules.

gollark: SERIOUSLY?

gollark: You COULD have done it.

gollark: > why would I look for the leaker if I was himTo cover your tracks.

References

Panlilio, Yay (1950). The Crucible: An Autobiography by Colonel Yay, Filipina American Guerrilla. New Brunswick: Rutgers University Press. pp. 307-310. ISBN 9780813546827.

Ipo Dam tree planting

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[1] Panlilio, Yay (1950). The Crucible: An Autobiography by Colonel Yay, Filipina American Guerrilla. New Brunswick: Rutgers University Press. pp. 307-310. ISBN 9780813546827.