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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.
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.
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A Los Angeles County Department of Public Works sign along 7th Street in downtown Los Angeles. The department was formed in 1985 in a consolidation of the county Road Department, the Flood Control District (in charge of dams, spreading grounds, and channels), and the County Engineer (in charge of building safety, land survey, waterworks).
Los Angeles must also balance its water needs with environmental restoration efforts. Legal requirements mandate water retention in Owens Valley and Mono Lake to address ecological damage caused by aqueduct operations. [65] At the same time, agriculture consumes the majority of water statewide, leading to conflicts between urban and rural water ...
The California Department of Water Resources recognizes 10 hydrologic regions and three additional drainage areas within the U.S. state of California. The hydrologic regions are further subdivided into 515 groundwater basins. [1]
The reservoir has a surface area of 108 acres (44 ha) and receives water from a drainage area of 63.7 sq mi (165 km 2) on the north slope of the San Gabriel Mountains. [1] A formerly popular recreation spot, the dam, reservoir, and vicinity used to receive about 300,000 visitors each year, but since 2015, the facilities have been closed to the ...
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.