Point triple de partage des eaux Manche Atlantique Méditerranée

In the north of the Langres region, there's a place where a drop of rain, whether it falls here or three meters away, flows into the English Channel, the Atlantic or the Mediterranean, after swelling the Rhine, the Seine or the Rhône. The difference in destination results from its location in relation to the watershed.

Watershed: A river's watershed is the area of land where the rainwater it receives flows more or less directly, but inevitably, into the river. Watersheds are separated from each other by an imaginary line, often the crest of a hill or mountain, which can be compared to the ridge of a roof, with the gutters representing the rivers. This line is called the "watershed". A river's watershed is the sum of the watersheds of all its tributaries, plus its own before its first confluence.

Three watersheds in FRANCE: When three watersheds meet, the result is a "watershed". In France, there are three main watersheds:
1- Near Langres, where the Rhine, Seine and Rhône basins meet,
2- Near Langogne (48), where the Garonne, Loire and Rhône basins meet,
3- Near Pouilly-en-Auxois (21), where the Seine, Loire and Rhône basins meet.