ground drainage

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• Drainage in New Orleans — Drainage in New Orleans, Louisiana has been a major concern since the founding of the city in the early 18th century, remaining an important factor in the history of New Orleans through today. Elevation map of New Orleans. Hotter (pink) shades… …   Wikipedia

• Drainage density — is the total length of all the streams and rivers in a drainage basin divided by the total area of the drainage basin. It is a measure of how well or how poorly a watershed is drained by stream channels. It is equal to the reciprocal of the… …   Wikipedia

• Drainage — See also: Storm drain and Stormwater Deep inside a Sydney drain in New South Wales Drainage is the natural or artificial removal of surface and sub surface water from an area. Many agricultural soils need drainage to improv …   Wikipedia

• Drainage basin — Example of a drainage basin. The dashed line is the main water divide of the hydrographic basin A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit… …   Wikipedia

• Drainage divide — Main European drainage divides (red lines) separating drainage basins (gray regions) A drainage divide, water divide, divide or (outside North America) watershed is the line separating neighbouring drainage basins (catchments). In hilly country,… …   Wikipedia

• drainage basin —    The land area from which surface runoff drains into a stream channel or system of stream channels, or to a lake, reservoir, or other body of water [6].    In a karst setting, subsurface drainage (internal drainage) may have boundaries defined… …   Lexicon of Cave and Karst Terminology

• ground-water basin —    1. A general term used to define a ground water flow system that has defined boundaries and may include permeable materials that are capable of storing or furnishing a significant water supply; the basin includes both the surface area and the… …   Lexicon of Cave and Karst Terminology

• Ground-coupled heat exchanger — Earth cooling tubes or earth warming tubes (also known as ground coupled heat exchangers) utilize the earth s near constant subterranean temperature to warm or cool air for residential, agricultural or industrial uses. They are often a viable and …   Wikipedia

• drainage divide —    The rim of a drainage basin [16].    See also divide; ground water divide; water table divide …   Lexicon of Cave and Karst Terminology

• drainage — noun (U) 1 a system of pipes or passages in the ground for carrying away water or waste liquids: drainage channels 2 the process by which water or waste liquid flows away though this system …   Longman dictionary of contemporary English

• Optical ground wire — An optical ground wire (also known as an OPGW or, in the IEEE standard, an optical fiber composite overhead ground wire) is a type of cable that is used in the construction of electric power transmission and distribution lines. Such cable… …   Wikipedia