The source of a river - is the point at which it emerges as a stream from the water that forms its origin. This is usually run-off from boggy ground, at a higher altitude than sea level.
river basin
in the Saint Lawrence River as it emerges from the northeast corner of Lake Ontario.
The course of the Brahmaputra River flows southwest via the Assam Valley, and south through Bangladesh, and emerges in the Ganges Delta , through the Meghna, and empties in the Bay of Bengal.
A large crack in the ground formed by a river is called a gorge or canyon. If it is formed by a series of earthquakes, it is called a fault line or fissure.
alluvial fan occurs when the gradient of a river bed decreases suddenly as when a river emerges from a mountain
A large stream of surface water is usually called a river. A river is freshwater and runs from high to low ground.
Yes, the Ganges River forms a waterfall known as the Ganges Falls, also called the Gangotri Falls. It is located in Uttarakhand, India, near the town of Gangotri, where the Ganges River emerges from the Gangotri Glacier.
Irrigation!
This is called irrigation - specifically it is "surface irrigation".
The low ground between two hills is called a valley.
The area where water drains into a river is called its watershed or drainage basin. This refers to the entire land area that contributes water flow to a specific river or stream.