français


ligne de partage des eaux n. f.
Équivalent(s) English water shed



Définition :
Frontière entre deux bassins versants, généralement constituée par une ligne de crête de massif montagneux.

http://en.wikipedia.org/wiki/Drainage_basin

In the technical sense, a watershed refers to a divide that separates one drainage area from another drainage area.[3] However, in the United States and Canada, the term is often used to mean a drainage basin or catchment area itself. Watersheds drain into other watersheds in a hierarchical form, larger ones breaking into smaller ones or sub-watersheds with the topography determining where the water flows. Understanding geomorphology is essential in understanding how watersheds interconnect.[4]


sau linia de demarcatie intre doua ape care trece peste un obstacol natural