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Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin. It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
A simplified definition of wetland is "an area of land that is usually saturated with water". [14] More precisely, wetlands are areas where "water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season". [15]
Planning areas, also known as DGP areas or DGP zones, are the main urban planning and census divisions of Singapore delineated by the Urban Redevelopment Authority.There are 55 of these areas, organised into five regions.
This is a list of islands of Singapore. Massive land reclamation works over the past centuries has merged many of Singapore 's former islands and islets and has created a few larger ones. At present, Singapore has about 64 islands, with 7 of them belonging to the Singapore Armed Forces (SAF).
Chek Jawa Front Beacon during high tide at Chek Jawa Wetlands. Tanjong Chek Jawa (or Tanjung Chek Jawa or simply Chek Jawa) is a cape and the name of its 100-hectare wetlands located on the south-eastern tip of Pulau Ubin, an island off the north-eastern coast of the main island of Singapore.
The water resources of Singapore are especially precious given the small amount of densely settled land. Singapore receives an average of 2,400 mm of rainfall annually, well above the global average of 1,050 mm. The constraint is the limited land area to catch and store the rainfall, and the absence of natural aquifers and lakes. [11]
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Singapore's industrialisation (particularly in terms of coastal development) and land reclamation projects have resulted in the extensive loss of marine habitats along the city-state's shores. [16] The majority of Singapore's southern coast has been altered through the process of land reclamation, as have large areas of the northeastern coast. [16]