| ', a place where the river begins its journey. Where is the source of a river? The source of a river is usually found in high places such as hills or mountains. A river can have more than one source. Different types of sources Some rivers begin where a natural spring releases water from underground. . Some rivers begin in mountains or hills, where rain water or snowmelt collects and forms small channels, . At first, the channels are small and are called . As more water enters the channels they grow forming (larger channels). The streams in the gullies eventually become big enough to form a river. The source of some rivers is a lake. The source of the River Nile is Lake Victoria, in Burundi. In some places, rain water can't sink into the ground as the ground is too wet already. The water forms a bog. The water flows out of the bog to form lakes and streams. | 
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Rivers begin at their source in higher ground such as mountains or hills, where rain water or melting snow collects and forms tiny streams. Find out more about the different sources of rivers.
The Stages of a River. River Severn | River Thames. Nearly all rivers have an upper, middle, and lower course. Young River - the upper course. The beginning of a river, when it flows quickly with lots of energy, is called a young river.
Rivers carry water and nutrients to areas all around the earth. They play a very important part in the water cycle, acting as drainage channels for surface water. Rivers drain nearly 75% of the earth's land surface.
What is a River? Where do Rivers Begin and End? How are Rivers Formed? What do Rivers Provide? Why are Rivers Important?
A river is a naturally winding watercourse that drains surplus water from a drainage basin. River channels The trenches in which rivers flow for most of the year.
Some rivers begin where a natural spring releases water from underground. The source of the River Thames is a spring. Some rivers begin in mountains or hills, where rain water or snowmelt collects and forms small channels, . At first, the channels are small and are called rills.