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Fig. 2


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Évolution pluri-décennale des ressources eau : (A) pluie à Tillabéry, (B) apports du fleuve à Niamey et (C) profondeur de la nappe phréatique du CT3 pour trois sites.

Multi-decadal evolution of water resources: (A) rainfall in Tillabery, (B) Niger river discharge in Niamey and (C) depth of the CT3 water table in three places.

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