An assessment of the surface water resources of Zimbabwe and guidelines for development planning

agua aflorada agua superficial barrage bassin versant captage d'eau dams eau de ruissellement eau souterraine eau superficielle embalses escorrentia groundwater rendement rendement en eau rendimiento represas ressource en eau runoff surface water uso del agua utilisation de l'eau water harvesting water reservoirs water resources water use water yield watersheds yields zimbabwe