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free drainage

См. также в других словарях:

  • Drainage model — may refer to: a surface drainage model or rainfall runoff model      see surface runoff, runoff model (reservoir) , or a software site providing free download of a conceptual rainfall runoff model (RainOff) based on a… …   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 equation — A drainage equation is an equation describing the relation between depth and spacing of parallel subsurface drains, depth of the watertable, depth and hydraulic conductivity of the soils. It is used in drainage design. Parameters in Hooghoudt s… …   Wikipedia

  • Drainage system (Agriculture) — An agricultural drainage system is a system by which the water level on or in the soil is controlled to enhance agricultural crop production.=Classification=Figure 1 classifies the various types of drainage systems. It shows the field (or… …   Wikipedia

  • Drainage system (agriculture) — An agricultural drainage system is a system by which the water level on or in the soil is controlled to enhance agricultural crop production. Contents 1 Classification 1.1 Surface drainage systems 1.2 Subsurface drainage systems …   Wikipedia

  • Acid mine drainage — Yellow boy in a stream receiving acid drainage from surface coal mining. Acid mine drainage (AMD), or acid rock drainage (ARD), refers to the outflow of acidic water from (usually abandoned) metal mines or coal mines. However, other areas where… …   Wikipedia

  • Tile drainage — (in agriculture) is an agriculture practice that removes excess water from soil subsurface. Whereas irrigation is the practice of adding additional water when the soil is naturally too dry, drainage brings soil moisture levels down for optimal… …   Wikipedia

  • Palmer's Drainage Windmill — Geobox|Windmill name =Palmer’s Mill Windpump category = Windmill image caption = Palmer’s Mill Windpump symbol = country = England state = Norfolk region = East of England district = Broadlands municipality = Upton location = to the north of… …   Wikipedia

  • Stubb Drainage Windmill — Geobox|Windmill name = Stubb Drainage Windmill category = Windmill image caption =Stubb Drainage east of the village of Hickling symbol = country = England state = Norfolk region = East of England district = North Norfolk municipality = Hickling… …   Wikipedia

  • Memel, Free State — Memel Country  South Africa Province Free State Population (2001)    Total 469 …   Wikipedia

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