a drainage basin is an area where surface water (percipitation or ice or such) converges to a point at the lowest point of elavation on that area and then in most cases exits that basin to join a legitimate body of water such as the ocean or a river etc.
A drainage basin is an area of land that accumulates surface water and directs it into a shared outlet, such as a river or lake. It is bordered by drainage divides, which are higher land areas separating different basins. Understanding drainage basins is essential for comprehending water flow in geographical and environmental studies.
;