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Land drainage : ウィキペディア英語版 | Land drainage Land drainage may refer to: * Surface drainage of the land * * Drainage system (geomorphology), pattern of natural drains, streams, rivers, etc. * * Surface runoff, surface runoff of excess rainfall from the land * * Drainage system (agriculture), land forming or land shaping to enhance the drainage from the soil surface in agricultural land * * Contour plowing, controlling runoff and soil erosion * Subsurface (groundwater) drainage * * Horizontal drainage by pipes and ditches * * * Drainage * * * Tile drainage * * * Watertable control * * Vertical drainage by wells * * * Well drainage * * * Watertable control
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Land drainage」の詳細全文を読む
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