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Marina Reservoir


Built across the mouth of Marina Channel, Marina Barrage creates Marina Reservoir ​ Singapore’s 15th reservoir, and the first in the heart of the city. 

The catchment of Marina Reservoir is about one-sixth the size of Singapore and it covers the island’s largest and most urbanised areas. Together with Punggol and Serangoon reservoirs, Marina Reservoir has increased Singapore’s water catchment from half to two-thirds of the country’s land area. ​

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Reservoirs Blue Map of SG

Water from Local Catchment is a pillar of Singapore’s water sustainability strategy, along with Imported Water, NEWater and Desalinated Water. Collectively, these four sources of water are known as the 'Four National Taps'.​​​​

Urban Stormwater Collection

Singapore is one of the few countries in the world to harvest urban stormwater on a large-scale for its water supply. Singapore has two separate systems to collect rainwater and used water. Rainwater is collected through a comprehensive network of drains, canals, rivers, stormwater collection ponds and reservoirs before it is treated for drinking water supply.

View enlarged version >> Underground Used Water Collection