The La MotteLa Motte 1 site (AgdeAgde), submerged[aut]Submerged in the bed of the Hérault RiverHérault river, corresponds to a settlement[aut]Settlement from the end of the Bronze Age initially established on the edge of a lagoon that is now clogged. The site is characterised by more than 500 wooden piles divided into two main groups located on shoals[aut]Shoal. The use of varied species attests to the exploitation of distinct environments such as Mediterranean mixed oak forests[aut]Ecosystems, habitat types, and woodland communitiesmixed deciduous oak forest and[aut]Forest typesmixed deciduous oak forest riparian forests[aut]Ecosystems, habitat types, and woodland communitiesriparian forest. Moreover[aut]Forest typesriparian forest, the spatial analysis[aut]Spatial analysis illustrates the presence of several coherent alignments that use a specific species. The excavation trenches dug support the interpretation thereof as systems for bank maintenance and protection via different techniques: wattle made from the strawberry tree[aut]Tree on oak piles[aut]Architecture:components and structural unitspile, and possible live stakes made of willow. The study of the goods and radiocarbon[aut]Radiocarbon dating show the successive installation of these systems between the 10th and the beginning of the 8th centuries BC. The goal of the various technical solutions was to protect the areas around the settlement[aut]Settlement from erosion[aut]Erosion. Their use must therefore be examined in the light of the changes in their immediate surroundings, which saw a rise in the sea level[aut]Marine environmentsea level rise coupled with a progressive filling of the delta of the Hérault. This case study thus illustrates the capacity to adapt and the vulnerability of the populations of the Bronze Age in the face of changes in a particularly sensitive environment.