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Irrigation Dictionary : Table of Contents (members login required)\t
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Term No.Term NameTerm Description
6773Rain forest A tropical forest having an annual rainfall of at least 2540 mm......
4744Rain gauge, PluviometerA container used to collect and measure the depth of precipitation or of water discharged by a sprinkler. .....
791Rain gauge, Rain gage, Pluviometer, or OmbrometerA non-recording instrument for measuring  rainfall at a given place over time......
6433Rain pillarsMinor erosional forms composed of upward- projecting pillars of soil or soft rock capped and protected by pebbles or concretions......
793Rain recording gauge, Rain recorder, Self-registering gauge, pluviographA recording instrument for measuring rainfall. .....
6429Raindrop erosion, or Splash erosionA form of soil erosion resulting from splash caused by the impact of falling rain drops......
774Rainfall1 – Precipitation in the form of liquid water. 2 – The amount of rain, usually expressed in units of depth of water that reaches the surface of th.....
780Rainfall areaGeographical extent of a given storm......
799Rainfall distribution coefficientAn index of Rainfall distribution, obtained by dividing the maximum rainfall at any point on a basin by the mean on the basin......
924Rainfall excess, or Net rainfallThe volume of rainfall available for direct runoff......
798Rainfall indexThe average rainfall intensity when the volume of rainfall equals the volume of observed runoff ; it represents the combined effects of interception a.....
777Rainfall intensityThe rate at which rainfall occurs expressed in depth units per unit time......
778Rainfall intensity curveA curve which expresses relation of the intensities to their duration......
779Rainfall intensity frequency, or Rainfall recurrence intervalThe average time interval between the occurrence of rainfall of a given intensity and that of an equal or greater intensity......
787Rainfall penetrationThe depth below the soil or rock surface reached by a given quantity of rainfall which has passed below such surface. The maximum extent of penetratio.....
781Rainfall provinceAn area characterized by similarity in distribution and seasonal concentration of precipitation......
931Rainfall-runoff modelAny type of numerical model simulating runoff processes as a function of rainfall and evaporation......
5340Rainfed agricultureAgriculture without application of irrigation. It may be without, or with a drainage system......
5003Rainfed cropsCrops sown and grown completely sustained by rainfall without external irrigation support. .....
4719Raingun Big gun, Giant sprinkler or Gun sprinklerAn apparatus in which a single large sprinkler or a rotating boom fitted with smaller sprinkler heads is mounted on a wheeled platform.  The sprinkler.....
786RainwashThe effect of rain in washing away silt, earth, etc.; also the matter thus washed away......
6430Rainwash1 - The creep of soil and superficial rocks under the influences of gravity and the lubricating action of rain. 2 - See 786......
2093Raised moss, Raised bog, Highermoor, or HochmoorA class of peaty land consisting of sphagnum which rises from the edges towards the middle and thus shows a convex upper surface......
5927Raker, or Raking shoreAn inclined baulk of timber with one end resting on the ground and the other pressing against the wall where support is to be given......
2698RakingProcess of cleaning of the trash racks......
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