In many of our urban cores and fringes, development has neglected nature and water systems. This is also the case in the twentieth-century eastern periphery of Brussels, where the Woluwe valley is tucked away underneath the territorial expansion of the city. We cannot continue like this. In order to cope with peak rains, to combat drought and heat island effects, and to let biodiversity flourish, we must construct another relation to the water system. Woluwe Waterland takes water challenges as the entry point for tomorrow's plans and building projects in the city’s eastern periphery. Fallow and 1010au developed this research through fieldwork, mapping and extensive interviews with residents, stakeholders and actors. It proposes a series of typologies of water neighbourhoods. These include a swamp district (downstream), a seasonal district (on the flanks) and an infiltration district (upstream), and integrated projects that simultaneously attempt to restore the water balance and answer the current transformation challenges in the area.