The lakes of hydro-agricultural dams are innovators developed by the Ivorian State in the countryside of the north of the country in the 1970s. The objective assigned to these developments and the results of the first initiatives have led to their dissemination throughout the district Savannahs. How did these innovators expand in the northern Ivorian savannahs? Can we include this dam management policy in the theory of spatial diffusion of innovations? This article aims to determine the factors and / or the modalities of the spread of hydro-agricultural structures in northern Côte d'Ivoire. The hypothesis that guides our analysis is that the creation of dams in northern Ivory Coast is part of the spatial diffusion model of Hägerstrand's innovations (1953). The applied methodological approach is essentially based on an important literature search. The resulting result indicates that the diffusion process of the hydro-agricultural dams is marked by the expansion from a source emitting from the proximities to the spaces of remoteness. However, it does not respect the four phases of spatial diffusion of innovations described by Hägerstrand.