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Definition of Drainage basin

Babylon English

drainage area, drainage basin, area from which rainfall flows into a river or reservoir, catchment basin; (Human geography) area of a city or town from which people are allocated to a specific hospital or students to a specific school or other institutions or places
drainage basin, watershed, area from which rainfall flows into a river or reservoir
Drainage basin Definition from Business & Finance Dictionaries & Glossaries
BTS Transportation Expressions
The land drained by a river system. (DOE5)
By the Bureau of Transportation Statistics.
Drainage basin Definition from Science & Technology Dictionaries & Glossaries
EIA Energy Glossary
The land drained by a river system.
Source: Energy Information Administration, 2006
Glossary of water terms
land area where precipitation runs off into streams, rivers, lakes, and reservoirs. It is a land feature that can be identified by tracing a line along the highest elevations between two areas on a map, often a ridge. Large drainage basins, like the area that drains into the Mississippi River contain thousands of smaller drainage basins. Also called a "watershed."
Drainage basin Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A drainage basin or catchment basin is an extent or an area of land where surface water from rain, melting snow, or ice converges to a single point at a lower elevation, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean. For example, a tributary stream of a brook that joins a small river is tributary of a larger river, which is thus part of a series of successively smaller area but higher elevation drainage basins. Similarly, the Missouri and Ohio rivers are each part of their own drainage basins and that of the Mississippi River.

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Drainage basin Definition from Society & Culture Dictionaries & Glossaries
EPA Terms of Environment
The area of land that drains water, sediment, and dissolved materials to a common outlet at some point along a stream channel.
Provided as a public service by the U.S. Environmental Protection Agency
Environmental Engineering (English ver.)
A subdivision of a watershed.
Drainage basin Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

Noun
1. the geographical area draining into a river or reservoir
(synonym) catchment area, catchment basin, drainage area
(hypernym) geographical area, geographic area, geographical region, geographic region