catchment area

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catchment area


drainage basin,

area drained by a stream or other body of water. The limits of a given catchment area are the heights of land—often called drainage divides, or watersheds—separating it from neighboring drainage systems. The amount of water reaching the river, reservoir, or lake from its catchment area depends on the size of the area, the amount of precipitation, and the loss through evaporation (determined by temperature, winds, and other factors and varying with the season) and through absorption by the earth or by vegetation; absorption is greater when the soil or rock is permeable than when it is impermeable. A permeable layer over an impermeable layer may act as a natural reservoir, supplying the river or lake in very dry seasons. The catchment area is one of the primary considerations in the planning of a reservoir for water-supply purposes.

Catchment area

Surface, typically on a roof, where rainwater is caught and directed into a rainwater harvesting system.

catchment area

[′kach·mənt ‚er·ē·ə]
The rural-urban outskirts of a particular city.

catch basin

A reservoir, esp. for catching and retaining surface drainage over a large area, in which sediment may settle.

catchment area

the area of land bounded by watersheds draining into a river, basin, or reservoir
References in periodicals archive ?
Pupils who have just moved into a catchment area currently get considered above those who may have lived there all their lives simply because they live closer to the school.
It should be noted that any amount of afforestation of places other than the catchment areas is futile for solving water shortage in rivers.
Those families willing to move are prepared to pay a 12% premium for their desired catchment area, equivalent to an extra PS26,800 in the current property market.
Among the six main catchment areas, Lake Urumiyeh, Hamoun, Caspian Sea and Karakum experienced 36%, 35%, 31% and 28% decreases in rainfall respectively.
They said the tree plantation would not only helps in checking erosion of land in the catchment areas of water reservoirs but also lessens the adverse impact of climate change.
Catchment areas of all stream gauging stations were collected from reports of Surface Water Hydrology Project (WAPDA).
Catchment areas to serve as water harvesting- cumpercolation structures.
catchment area level stakeholders and partners with a view to scoping the GCF project concept;
Cromwell Junior and Infant School in Nechalls, Birmingham, and a map showing the school's catchment area in 2014
The Swansea school catchment areas which are most commonly requested in a search for a property are for Olchfa Comprehensive, Bishop Gore and Bishopston Comprehensive.
A proposal to merge catchment areas of six primary schools in Warwick into a single 'super priority area' was also dropped.
Officials want to achieve a balance between the Gabalfa Primary and Whitchurch Primary catchment areas and reduce any uncertainty in admission arrangements.