There are a vast number of reasons why one river could have more sediment than another. The type of watershed. Urbanization stream channeling Dams Heavy rains That is a short list of things that can impact the sediment load of a river.
a stream can be part of more than one watershed because streams go in different directions so they end up in different watershed +++ That doesn't really make sense. A stream can only start on one water-shed but it may pick up others as tributaries from different hills.
mississippi river
Mississippi river
Fast moving stream
A river basin drains all the land around a major river. Basins can be divided into watersheds, or areas of land around a smaller river, stream or lake. Large river basins, such as the Neuse and Cape Fear, are made up of many smaller watersheds. The landscape is made up of many interconnected watersheds.
Alberta and Saskatchewan, for more in depth information check out: http://atlas.nrcan.gc.ca/site/english/maps/environment/hydrology/watershed/1
A wider and shallower river stream bed tends to slow down the river's speed as frictional forces increase with more contact with the bed. This can reduce the river's power to cause erosion. Conversely, a narrower and steeper stream bed can increase the river's speed, which enhances its erosive power by allowing it to carry more sediment and erode the riverbanks more effectively.
The Amazon River is classified as a 12th-order stream according to the Strahler stream ordering system. This system ranks rivers based on their tributaries, with higher numbers indicating larger and more complex river systems. The Amazon's vast network of tributaries contributes to its high stream order, making it one of the largest river systems in the world.
The Tone River has the largest watershed and serves water to more than 30 million inhabitants in Tokyo.
A large stream of water that flows across the land is known as a river. There are more than 250,000 rivers located in the United States alone.
It could become a waterfall. Or if it just flows over onto more land then it becomes a river, not a stream.