Until the dawn of industrialization and tourism, the remains of the pile dwellings were well protected. Until the dawn of industrialization and tourism, the remains of the pile dwellings were well protected. On the one hand, the construction of port facilities, sea walls and sewage pipes led to the discovery of new pile dwellings. On the other hand, the increased erosion caused by these works damaged both the natural shores and the ancient settlements.

In recent years, quagga mussels from the Black Sea have reached Lake Constance through soiled ship hulls. It replaces native species such as the triangular mussel and settles on piles and the lake bed. The American crayfish colonizes the pile dwelling sites and creates tunnels in their cultural layers. The native beaver also burrows through the World Heritage sites.

Climate change is causing low water levels more and more frequently as well as favoring the growth of Swiss pondweed. It overgrows the pile fields and attacks the surfaces of the wood. Attempts are being made to curb erosion with geotextiles and gravel fills. Continuous monitoring by the State Office for Monument Protection should help to develop preservation concepts.