WordNet
n. the geographical area draining into a river or reservoir [syn: catchment area, catchment basin, drainage basin]
Usage examples of "drainage area".
But fairly frequently cyclonic systems came by, bringing winds from the east, and when that happened cold air ran over the snow-covered Lunae plateau, scouring snow and becoming denser and colder, until the entire drainage area was funneled out through notches in the great cliffs edge, and the winds then fell like an avalanche.
The sink was a huge, old cast-iron monstrosity with a large bowl and expansive drainage area for dishes.
But fairly frequently cyclonic systems came by, bringing winds from the east, and when that happened cold air ran over the snow-covered Lunae plateau, scouring snow and becoming denser and colder, until the entire drainage area was funneled out through notches in the great cliff’.