What is the deepest fastest channel in a river called?
What is the deepest fastest channel in a river called? Thalweg. In hydrological and fluvial landforms, the thalweg is a line drawn to join the lowest points along the entire length of a stream bed or valley in its downward slope, defining its deepest channel.
Which section of the river is the fastest and why?
Toward the middle of a river, water tends to flow fastest; toward the margins of the river it tends to flow slowest. 2. In a meandering river, water will tend to flow fastest along the outside bend of a meander, and slowest on the inside bend.
Why is the middle of the river the fastest?
Water moves most quickly when it has less resistance, so the friction of water against rocks slows it down. For that reason, the fastest part of a river tends to be in the center, just below the surface. This is where friction is lowest.