Résumé
At the African scale, there is a lack of coordination for hydrological data collection and dissemination : hydrological data is often scattered, heterogeneous or incomplete Numerous public, semi-public and private organizations produce and manage data, but often they do not have the resources to exchange, standardize, summarize and apitalize on the data they generate There is not enough partnership between the national hydrological services, in many countries licensing issues prevent the distribution of the data collected. There is also a more general problem of a widespread reluctance to share information There is need to develop links between data producers and users to reinforce capacities for accessing, processing and take benefit from existing data.As a consequence, the African continent is largely under-represented in global scale studies.