Drainage Basin Hydrology

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Aquifer

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• A body of rock and/or sediment that holds groundwater.

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Atmospheric storage

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• The storage of water in the atmosphere in the form of water vapor, clouds, and precipitation.

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Channel flow

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• The movement of water within the river or stream channel.

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Channel storage

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• The water held in a river or stream channel, including pools and slower-moving sections.

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Closed system

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• A system that does not exchange matter with its surroundings, but can exchange energy.

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Discharge

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• The volume of flow of water in a channel, measured in cubic metres per second (cumecs).

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Drainage basin

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• The area of land drained by a river.

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Evaporation

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• The sum of evaporation from the land surface plus transpiration from plants.

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Groundwater

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• The water that resides under the surface of the earth, typically in porous rock formations known as aquifers.

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Groundwater discharge

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• The natural or artificial removal of groundwater, such as springs or wells, to the earth's surface or into bodies of surface water.