lakes and marshes; inland waters
Collective term for lakes, marshes, and wetlands, often used in geography, ecology, and environmental contexts.
Many lakes and marshes are scattered throughout this region.
A water quality survey of the lakes and marshes was conducted.
Small lakes and marshes are scattered throughout this region.
The local government is advancing measures to conserve the lakes and marshes.
湖沼 is a formal, technical term covering lakes and marshes together, used in geography or environmental writing, unlike the casual, name-like レーク.
Compound of 湖 (lake) and 沼 (marsh). The reading こしょう is the on'yomi of both characters.
In recent years, the water quality of lakes and marshes near cities has deteriorated.