(surface) drainage channel

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• 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 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 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

• Surface runoff — Runoff flowing into a stormwater drain Surface runoff is the water flow that occurs when soil is infiltrated to full capacity and excess water from rain, meltwater, or other sources flows over the land. This is a major component of the water… …   Wikipedia

• Drainage system (Geomorphology) — In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular watershed. They are governed by the topography of the land, whether a particular region is dominated by hard or soft rocks, and the… …   Wikipedia

• Channel Tunnel — Tunnel sous la Manche Tunnel sous la Manche en anglais Channel Tunnel légende : Carte du Tunnel sous la Manche Type …   Wikipédia en Français

• 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

• drainage ditch —    A small channel through which surface water can drain [16] …   Lexicon of Cave and Karst Terminology

• irrigation and drainage — ▪ agriculture Introduction  artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… …   Universalium

• well-defined channel — A channel clearly in existence, with bed of stream bordered by banks. An essential feature of a watercourse. 56 Am J1st Water § 6. As to what constitutes a well defined channel for natural drainage of surface water, see Anno: 81 ALR 262 …   Ballentine's law dictionary

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium