Avec inclinomètre pour mesurer l’angle (la pente). Roche : argilite altérée
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L’objectif est de couvrir des besoins estimés entre 7,4 et 10,7 Mm3 permettant de répondre à un système de polycultures et d’assolement avec une occupation des parcelles sur l’année au lieu de quelques mois actuellement.
L’objectif du barrage est de couvrir des besoins estimés entre 2,6 et 6,7 Mm3 (millions de mètres cubes) permettant, à l’horizon 2050, une alimentation continue quelle que soit la période de l’année.