This thesis investigates how the floodplain landscapes of the Meuse River -particularly in its French upstream section- can be revealed and transformed toward an attunement with the river’s intrinsic temporal rhythms. Against a backdrop of large-scale anthropogenic pressures and regulatory structures that have disattuned human uses from the river’s seasonal flow, the research adopts a landscape-based approach to reframe river relations in spatial and temporal terms.

Through a multi-scalar inquiry, the thesis first maps a genealogy of international uses that have led to ecological imbalance and hydrological disconnection along the Meuse. A subsequent local-scale transect along the least pressured French section documents seasonally-informed, often overlooked or fading, human–river and interspecies practices. These are interpreted through the lens of spatial calendars and relational values, uncovering embedded temporalities still tied to the river's flow.

A territorial design experiment -the Atelier Meuse in Sedan- serves as a methodological and spatial prototype for reattuning the post-industrial river landscape. Here, three interwoven design values are proposed: slowing water, cultivating belonging, and gardening the floodplain. These values are enacted through participatory, seasonal maintenance practices that interlace human and non-human actors, fostering new collective riverine relations.

Rather than offering attunement as a fixed solution, the thesis frames it as an ongoing, situated process: one that demands flexible representations, such as spatial calendars, and designs that respond to the dynamic and relational nature of riverscapes. This approach lays groundwork for future landscape and water management strategies across the international Meuse floodplain and other similar fluvial territories