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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.
Catchment areas may be established for the provision of services. For example, a school catchment area is the geographic area from which students are eligible to attend a local school. When a facility's capacity can only service a specific volume, the catchment may be used to limit a population's ability to access services outside that area. [11]
Infobox for a dam Template parameters [Edit template data] This template prefers block formatting of parameters. Parameter Description Type Status Name name Name of dam String optional Official name name_official Official name, if different from name. Preferably in native language. String optional Image caption image_caption Caption beneath image. String optional Image alternative text image ...
catchment the area of catchment (in square kilometres) which includes the entire area of the drainage basin for that body of water. This may include rivers and other bodies of water. If this can be accompanied with a map or drawing, include it with the article. Sample value: {{convert|2124|km2|sqmi|abbr=on}} basin_countries
Catchment zone in Nattai, Australia containing drinking water. Catchment hydrology is the study of hydrology in drainage basins. Catchments are areas of land where runoff collects to a specific zone. This movement is caused by water moving from areas of high energy to low energy due to the influence of gravity.
Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, [3] [4] and impluvium. [ 5 ] [ 6 ] [ 7 ] In North America, they are commonly called a watershed , though in other English-speaking places, " watershed " is used only in its original sense, that of the drainage divide line.
Water Management Areas (WMAs) are parts of South Africa that are managed by Catchment Management Agencies (CMAs). A CMA is established in terms of the National Water Act of 1998. A CMA is established in terms of the National Water Act of 1998.
Rainfall in the area has an annual average of 2,867 millimetres (112.9 in), and the catchment area is 372 square kilometres (144 sq mi). [5] The dam is of rock fill, central earth core type. The spillway of the dam has three gates, each 14 metres (46 ft) high and 11 metres (36 ft) wide.