there is less friction caused by the bottom of the river bed and banks by sediment and rocks etc. velocities are said to be fastest at the surface of the river because of this less amount of friction acting upon it. it is also fastest at the centre of the river where it is the deepest.
It depends how far along the river course it is. In theory as you move further down the river's course the bankfull width should increase.
Bankfull width refers to the width of a river or stream when it is at maximum capacity, just before it begins to overflow its banks. It is a key measurement used in river management and flood forecasting to help determine potential flood levels.
The dominant channel forming discharge is often assumed to be the bankfull flow. For example Knighton (1998) argued that "since it seems reasonable to suppose that river channels are adjusted on average to a flow which just fills the available cross-section, dominant discharge has been equated with bankfull flow, thereby giving it additional morphogenetic significance." The dominant discharge is supposed to give the same effects as the whole range of discharges occurring (Brandt, 2000). --- Brandt, S.A., 2000: Classification of geomorphological effects downstream of dams. Catena, vol. 40(4), pp. 375-401. doi:10.1016/S0341-8162(00)00093-X Knighton, D., 1998. Fluvial Forms and Processes: A New Perspective. Arnold, London, xv+383 pp.
Sean M. Lawlor has written: 'Determination of channel-morphology characteristics, bankfull discharge, and various design-peak discharges in western Montana' -- subject(s): River channels, Stream measurements
More efficient and most efficient are the comparative and superlative forms of "efficient".
diesel is more efficient
The diesel is more efficient but more expensive to build.
Insulators are more efficient at maintaining heat.
Gas central heating is more efficient than electric.Open cast mining can be more efficient than deep mines.
Yes, much more efficient.Yes, much more efficient.Yes, much more efficient.Yes, much more efficient.
narrow span of control is more efficient
more efficient, most efficient