It's called the watershed.
delta:)
I think you mean the source of a river, which is usually in the mountains.
I think you mean the source of a river, which is usually in the mountains.
tu madre.
tu madre.
Drainage basin :D Or watershed.
water shed
delta:)
drainage basin
The area from which water drains into a river is called the river's watershed or drainage basin. It includes all the land and waterways that contribute runoff to that particular river system. Rainfall and other sources of water collect in the watershed, eventually flowing into the river and its tributaries.
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.
A river system that operates inside a drainage basin. A drainage basin is the area of land drained by a river and its tributaries.