gestion de l'eau (3) Social sciences (3) histoire (2) analyse (2) History (2) Water (2) Reservoirs (2) History (2) Embankments (2) Analysis (2) sédiment (1) fleuve (1) bassin de retenue (1) projet (1) papier (1) modèle (1) carte (1) pays (1) lac (1) irrigation (1) infrastructure (1) information (1) pente (1) sujet (1) captage (1) canal (1) Development (1) Channels (1) Article (1) Nineteen seventies (1)