Drainage Area
Water
The area which drains to a particular point on a river or stream. The drainage area of a stream at a specified location is that area, measured in a horizontal plane, enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above the specified point.
An area that drains naturally to a particular point on a stream.
- — Dam Safety - Glossary of Terms retrieved 2014-06-01
An area having a common outlet for its surface runoff (also see Watershed and Catchment Area).
- — Service Hydrologist Reference Manual Glossary of Hydrologic Terms retrieved 2014-06-01
Weather
In hydrologic terms, an area having a common outlet for its surface runoff (also see Watershed and Catchment Area).