It's call divide or watershed.
land
A divide
A ridge of land separating river systems is called a water shed. Normally the land is very high up and mountainous.
A watershed is the area separating two different drainage basins/river systems.
A divide
Yes, it is correct.
watershed
17 river basins GO NC!!
the main river and all of its tributaries are called a river system. The land drained by the river system is called a drainage basin. Drainage basins are separated by the high land in between, known as a divide or watershed.
Several river basins in North Carolina drain into the state's estuaries, including the Cape Fear River, Neuse River, Pamlico River, and Shallotte River basins. These river basins deliver freshwater, nutrients, and sediment into the estuaries, playing a key role in maintaining the health and biodiversity of these coastal ecosystems.
South Carolina is primarily served by several major river basins, including the Santee, Savannah, and Pee Dee River basins. Additionally, smaller basins such as the Edisto and Congaree also extend into the state. These river basins play a crucial role in the state's ecology, economy, and water resources.
There isn't a river running on the border and separating separating France and Belgium, but there are several rivers flowing from France and into Belgium: Yser, Escaut (called Schelde in Belgium), and the Meuse river.