This dataset corresponds to underground hydraulic infrastructurein the Brussels-Capital Region. It is made up of two geometric classes: underground hydraulic pipes, and inspection chambers for underground hydraulic pipes.

This dataset corresponds to hydrography in the Brussels-Capital Region. It is made up of nine geometric classes: drainage basins, arched watercourses, open watercourses, surface water (ponds, marshes, swamps), surface water bodies, springs, right-of-way zone for arched watercourses, non aedificandi zone.