This study uses geomorphological and spatial evidence to examine site locational strategies in the Terramare culture. The emergence of this culture is partly due to movement of population into the Emilian plain south of the river Po, followed by intensive exploitation of this new environment. Around 1150 BC., five centuries after its formation, the Terramare culture experienced a generalized collapse. The aim of studying forms of settlement in this area is to provide a better understanding of the particularities. This research shows, through reconstruction of the Bronze Age drainage network, close links between terramares and watercourses, notably including diversion of streams into the ditches surrounding the sites. This activity is probably linked to the development of irrigation and drainage. The active status of alluvial ridges during this period is discussed. The latter involving the three areas identified. Some hypotheses are then put forward about social organization, shedding light on certain ritual and votive practices, in a context where this kind of data is quite rare. Lastly, the sudden appearance and decline of this culture are put into perspective.