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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.
It includes oceanic sea drainage basins which have hydrologically coherent areas (oceanic seas are set by IHO convention). The oceans drain approximately 83% of the land in the world. The other 17% – an area larger than the basin of the Arctic Ocean – drains to internal endorheic basins. There are also substantial areas of the world that do ...
Drainage basin of the Ohio River, part of the Mississippi River drainage basin. In hydrology, the drainage basin is a logical unit of focus [clarification needed] for studying the movement of water within the hydrological cycle. The process of finding a drainage boundary is referred to as watershed delineation. Finding the area and extent of a ...
Agricultural water management in the Philippines is primarily focused on irrigation. The country has 3.126 million hectares of irrigable land, 50% (1.567 million hectares) of which already has irrigation facilities. 50% of irrigated areas are developed and operated by the government through the National Irrigation System (NIS). 36% is developed by the government and operated by irrigators ...
Drainage basins of Asia, areas of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water.The drainage basin includes all the surface water from rain runoff, snowmelt, hail, sleet and nearby streams that run downslope towards the shared outlet, as well as the groundwater underneath the earth's surface. [1]
The Davao River is the third largest river by drainage basin in the southern Philippines on the island of Mindanao. It drains an area of over 1,700 square kilometres (660 sq mi) with a total length of 170 kilometres (110 mi). Most of the area is uplands.
Metro Manila, Philippines, is located in the hydraulically complex Pasig River—Marikina River—Laguna de Bay watershed, which includes more than thirty tributaries within the urban area. [1] The following list is sorted by name, with a brief description of each. Bold indicates the body of water is a major channel.
Divide (drainage) Drainage basin; Drainage divide; Precipitationshed; List of watershed topics * List of drainage basins by area; A. Alaska water resource region;