The ''El Deposito'' (lit: The Deposit) is an old underground water

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

in the city of San Juan in

Metro Manila Metropolitan Manila (often shortened as Metro Manila; fil, Kalakhang Maynila), officially the National Capital Region (NCR; fil, link=no, Pambansang Punong Rehiyon), is the seat of government and one of three defined metropolitan areas in ...

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

. It was built by the Spanish authorities in 1880 with a capacity of 15 million gallons to provide the residents of

Manila Manila ( , ; fil, Maynila, ), officially the City of Manila ( fil, Lungsod ng Maynila, ), is the capital of the Philippines, and its second-most populous city. It is highly urbanized and, as of 2019, was the world's most densely populate ...

and its surrounding areas with an adequate water supply. The reservoir was historically known as the site where the onset of the Philippine Revolution through the

Battle of San Juan del Monte The Battle of San Juan del Monte also refers as ''"Battle of Pinaglabanan"'' took place on August 30, 1896. It is considered as the first major battle of the Philippine Revolution, which sought Philippine independence from Spain. The first bat ...

took place in 1896.

History

The El Deposito was built as part of the Carriedo Waterworks which was built from 1878 to 1882 under the supervision of Genaro Palacios, a Spanish engineer and architect who also decided to use the Marikina River as the El Deposito's water source. The underground reservoir held military strategic importance. During the Philippine Revolution, the

Katipunan The Katipunan, officially known as the Kataastaasan, Kagalanggalangang Katipunan ng mga Anak ng Bayan or Kataastaasan Kagalang-galang na Katipunan ng mga Anak ng Bayan (KKK; en, Supreme and Honorable Association of the Children of the Nation ...

attempted to seize the El Deposito from Spanish colonial authorities in the

in 1896 and was held by Filipinos during the Philippine-American war. It was used as an armory; by the Americans during the

colonial administration Colonial or The Colonial may refer to: * Colonial, of, relating to, or characteristic of a colony or colony (biology) Architecture * American colonial architecture * French Colonial * Spanish Colonial architecture Automobiles * Colonial (1920 au ...

, and by the Imperial Japanese forces during their occupation of the Philippines in

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

. It was also used as a pulmonary hospital specifically for tuberculosis patients and as a firing range. El Deposito was recaptured by the Allied forces in 1945 but later fell to disuse after the war and the Philippine independence from the United States. Efforts to rehabilitate the underground reservoir began in 2016 when the University of the Philippines Archaeological Studies program conducted an assessment and excavation of the structure. The National Historical Commission of the Philippines conducted cleaning of the El Deposito's tunnel in 2018 as a preparation for the development of the site as a tourist destination It is planned to be open to the public in 2020.

Water supply

When the El Deposito was still in use as a water supply storage, it had a capacity of for 300,000 people. Ventilation shaft were also utilized to keep water fresh and free from contamination. As part of the Carriedo waterworks system, the reservoir also supplied water to hydrants and fountains in Manila. As part of the Carriedo water system, the El Deposito sources its water from the Marikina River. Water was pumped out from the river to the water reservoir through a cast iron pipes which passes through the Santolan area. The structure of the water reservoir which situated below an elevated hill consists of a vast central canal that is connected to 25 smaller canals which measure high and wide each.

Cultural Property

On August 30, 1972, a marker was installed by the National Historical Commission of the Philippines in recognition of the old reservoir as a cultural property. In commemoration of the first battle of the Philippine Revolution, the land along El Deposito was converted into a recreational park named the Pinaglabanan Memorial Shrine and Park.

References

{{coord missing, Philippines Buildings and structures in San Juan, Metro Manila Industrial buildings completed in 1880 Water supply and sanitation in Metro Manila Former buildings and structures in Metro Manila 1880 establishments in the Philippines