What is a catchment area?

A catchment area, also known as a watershed or drainage basin, is specifically defined as an area where water is naturally collected and drained by a particular river, lake, or other body of water. This definition encompasses the various processes through which precipitation falls within the catchment, flows over the land, and eventually converges into the water body. The significance of catchment areas lies in their role in hydrology, ecology, and water resource management, as they influence water quality, availability, and habitat sustainability.

In contrast to the other definitions, a catchment area is not limited to political boundaries, does not pertain to urban zones, and is not exclusively characterized by agricultural activities. Each of those other options has its own distinct meaning and context, separate from the specific hydrological function of a catchment area.