A catchment.
A water catchment area.
This is the 'river catchment'.
A water catchment area.
A closed catchment refers to a hydrological system where there is no surface water outflow from the area. This means that all water within the catchment remains contained within its boundaries, usually through evaporation, infiltration, or transpiration processes. Closed catchments are common in arid regions or areas with high evaporation rates.
A catchment is an area or a structure for collecting water, most often for collecting rain water.
The catchment is the correct answer. Commonly folk say 'watershed' but the watershed is the boundary (ridges etc) of the catchment.
Every area is a water catchment area to a greater or lesser extent.
it is the land area of water which has around water
No not every river IS a catchement. Although, yes every river does have a catchment area. The catchment area is the surrounding land within a watershed in which a single river system drains.
Gibraltar has covered a lot of their mountainous surface area with concrete, as a water catchment system.
This is its catchment - surrounded by its watersheds.