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EPANDAGE EAUX RUISSELLEMENT [1 record]
Record 1 - internal organization data 2001-12-03
Record 1, English
Record 1, Subject field(s)
- Drainage and Irrigation (Agric.)
Record 1, Main entry term, English
- runoff spreading 1, record 1, English, runoff%20spreading
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
There are bound to be rainstorms whose water the soil cannot fully absorb - a point of major importance in arid and semi-arid areas, for this water can be collected and used to improve productivity locally. The following four water management methods and erosion control structures apply: . runoff harvesting (catching runoff for supplementary irrigation); . total absorption or infiltration; . runoff diversion (redirecting excess water); . runoff spreading (distribution of runoff energy). ... Structures to dissipate runoff energy. When rainfall exceeds the soil's absorption capacity, the sheet runoff can be controlled by spreading it across the whole slope rather than concentrating it in channels and outlets, where it can cause problems. Its energy can be dispersed by keeping the speed below 25 cm ... Such dispersion across the slope is achieved partly by cropping techniques that keep the soil surface rough (clods, many grass stalks, effect of weeds and mulching, etc.) and partly by structures such as permeable microdams, which temporarily slow the flow, allow some sedimentation, spread the flood, reduce peak flows and improve absorption. 1, record 1, English, - runoff%20spreading
Record 1, Key term(s)
- run-off spreading
- run off spreading
Record 1, French
Record 1, Domaine(s)
- Drainage et irrigation (Agriculture)
Record 1, Main entry term, French
- épandage des eaux de ruissellement
1, record 1, French, %C3%A9pandage%20des%20eaux%20de%20ruissellement
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Irrigation de surface. [...] L'épandage des eaux de ruissellement ou de crue, qui du fait de la brutalité des précipitations, coulent de façon très temporaire dans les régions à faible pluviosité annuelle, est une forme fruste de submersion, utilisée par l'homme depuis longtemps, dans la vallée du Nil ou la Mésopotamie par exemple. 1, record 1, French, - %C3%A9pandage%20des%20eaux%20de%20ruissellement
Record 1, Spanish
Record 1, Textual support, Spanish
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