A
drainage divide,
water divide,
divide,
ridgeline,
watershed,
water parting, or (in
Canada)
height of land, is the line that separates neighbouring
drainage basins. In
hilly country, the divide lies along
topographical ridges, and may be in the form of a single range of hills or
mountains, known as a
dividing range. In flat country—especially where the ground is
marshy—the divide may be harder to discern.