Angat Dam

Angat Dam (Tagalog: [aŋˈɡat]) is a concrete water reservoir embankment hydroelectric dam in the Philippines that supplies Metro Manila and nearby provinces with water. It is a part of the Angat-Ipo-La Mesa water system. The reservoir supplies about 90 percent of raw water requirements for Metro Manila through the facilities of the Metropolitan Waterworks and Sewerage System and irrigates about 28,000 hectares of farmland in the provinces of Bulacan and Pampanga.

Angat Dam is located within the Angat Watershed Forest Reserve in Barangay San Lorenzo (Hilltop), Norzagaray, Bulacan. It supplies potable water to Metro Manila and powers a hydroelectric power plant. The dam is 131 meters high and impounds water from the Angat River that subsequently created the Angat Lake; the dam is located in Norzagaray as it was part of the town of Angat. Angat Dam has a normal high water level of 210 meters, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). It has three gates opening a total of 1.5 meters to gradually release excess water collected during typhoons. In comparison, Ipo Dam, located downstream of Angat Dam, has three gates and 100.8 meters as its normal high water level (NHWL). Ambuklao Dam on the other hand, has two gates with NHWL at 752 meters. Binga Dam, which sits downstream from Ambuklao, has three gates and NHWL at 575 meters. San Roque Dam, which was receiving water from Ambuklao and Binga, has NHWL at 280 meters. Angat Dam supplies potable water and energy to Metro Manila and nearby areas. Tourists also visit the dam for fishing, boating and hunting. In the early 1990s, the Philippine government and Metropolitan Waterworks and Sewerage System studied tapping the Umiray River basin in General Nakar, Quezon as an additional source for the Angat Dam Reservoir, as the growing population of Metro Manila pushed the demand for potable water up. This led to the Umiray-Angat Transbasin Project (UATP), which began in July 1995 and was completed in June 2000 with a total cost of ₱4 billion. The UATP involved constructing a 13 km 4.3 meter diameter diversion tunnel which channeled the headwaters of Umiray River at it

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