watercourses
nounUK /ˈwɔːtəkɔːsɪz/
US /ˈwɔtərkɔrsɪz/
Watercourses are streams or rivers where water flows along the ground.
The map shows several watercourses running through the valley.
OTHER MEANINGS
2. Channels dug to carry water for farming or drainage.
Farmers cleared the watercourses to keep the fields from flooding.
3. Natural paths that water takes during heavy rain.
After the storm, new watercourses appeared across the hillside.
4. Legal waterways that the public may use or that mark property lines.
The old watercourses define the boundary between the two farms.