Explain why many reservoirs have been built in Singapore.
Although Singapore is located in the tropics with abundant rainfall, it faces the problem of water shortage due to its small land area, low altitude, short rivers and lack of good underground aquifers. In order to effectively collect rainwater and regulate these water resources, Singapore has been actively building reservoirs since the British colonial period, turning about two-thirds of the country's land area into a catchment area that can effectively collect rainwater. Today, rainwater falling in two-thirds of Singapore can flow to reservoirs all over the country through perfect channels and drainage systems. The four major sources of fresh water in Singapore are: catchments (including all reservoirs, drains, channels, etc. ). Imported water. Reclaimed water. Seawater desalination. The 65,438+07 reservoirs in Singapore include Gordon Reservoir, Boyang Reservoir, Mulai Reservoir, Shalinwen Reservoir, Cranzhi Reservoir, Bandan Reservoir, Bayas Reservoir, Meric Reservoir, Shilida Reservoir, Binhai Reservoir, Bangor Reservoir, Shilonggang Reservoir, Bailuo Reservoir and Proud Kong Reservoir.