This French-language atlas presents detailed soil maps of France at a 1:2,000,000 scale, focusing on areas affected by hydromorphy and the water reserves held within the soils. Produced by the Service de la carte pédologique de France, the work combines scientific cartography with environmental data to illustrate how soil characteristics vary across the landscape and how these variations influence water storage capacity. The maps serve as a valuable reference for researchers, land managers, and policymakers interested in soil science, hydrology, and regional planning.