Definition:
Système de drainage destiné à intercepter les eaux de ruissellement d’un terrain en pente. Des tuiles sont disposées à flanc de coteau pour intercepter le ruissellement et éviter que l’eau n’atteigne les terres situées en contrebas. Il est également possible de creuser une rigole à ciel ouvert pour obtenir le même effet.
Source:
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Food and Agriculture Organization of the United Nations, AQUASTAT Web Site
FAO/IPTRID/ICID/ODA, 2000, Irrigation Guidelines, Land and Water Digital Media Series 12, & FAO, 2000, Handbook on Pressurized Irrigation Techniques