noun
exorheic lake; open lake
A lake that drains into a river or the ocean, as opposed to a closed basin. Technical term used in geography and hydrology; the antonym is 無口湖 (endorheic lake).
See also: 無口湖
琵琶湖は有口湖の一例です。
Lake Biwa is an example of an exorheic lake.
有口湖は最終的に海へ水が流れ出る湖です。
An exorheic lake is a lake whose water eventually flows out to the sea.