The Marne is a river in France, an eastern tributary of the Seine in the area east and southeast of Paris. It is 514 kilometres long. The river gave its name to the departments of Haute-Marne, Marne, Seine-et-Marne, and Val-de-Marne. From Wikipedia
Lifeguard-supervised spots remain shut pending daily E.coli tests that will determine when public access can resume this summer.