أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Depends on your location. From the Caribbean perspective, the hierarchy from largest to smallest is Basin, Watershed, Catchment.
Drainage or River Basin: A river basin or drainage basin is a portion of land drained by a river and its tributaries. A river basin sends all the water falling in the surrounding land into the river.
Watershed: A watershed is simply the area of land that catches rain and snow and drains or seeps into a marsh, stream river, lake or groundwater.
Catchment area - the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet.
