This station is located close to the confluence with the Aron tributary, the Loire River lateral canal and the Seine-Loire canal. Because of the Decize dam, built in 1836 and elevated in 1933 (Fig. 1), the main channel of the Loire River allows the shipping connection between these canals. The coring site (46°49′36.6″N, 3°27′38.2″E) is located
1.5 km upstream from this dam and 400 m downstream from the max-
imum dam influence (the lock of the lateral canal).