the gradient and how much friction there was.
The gradient means how steep the land the river is on so if it is very steep them the velocity will be higher.
it is the speed of the flow in a river
There are three things a river's power to erode depends on that includes the slope of the river. The other two things are the volume of flow and the shape of its stream bed.
velocity
Depends on the situation, a river can flow at a gentle 2 mph or the sea can race up a shallow beach at 20 mph.
Manning equation if the hydraulic radius decreases then the velocity decreases
Well....... It depends. If the river is really big and wide, and there are hardly any plants growing in it, and there are no rocks and the river is on a plain, then it will probably flow really fast. If the river is atiny little stream in the mountains, then it will probably flow slower. It all depends on the river
Velocity is the mean speed of flow over time (metres per second) measured either at apoint in a river channel or over a set distance.
A river delta is formed from the deposition of sediments carried by a river as the river enters an ocean, sea, lake, or another river. This is because the flow velocity decreases significantly and the fluid loses the ability to transport sediment.
A river's power to erode depends on a river's slope, the volume of flow, and the shape of the river.
It depends which river. Some flow into lakes, others flow into the Ocean.
in relation to the flow dynamics of the water against standing water(resistance) and the widening if the river in relation to flow (expanding area in relation to pressure) it would be easy to see that the flow can diminish. what factors need to be taken into account is changes in the elevation of the flow ( decreasing elevation would obviously increase the flow and elevated areas would widen the river and create lakes) this can be seen by rapids and pooling in the river. so velocity would be a variable but the gallon per minute flow would be more of a constant please let me know if this helps you hockeylvn@hotmail.com
the peripheral velocity of the turbine is the around velocity. the increase in the velocity of the peripheral will decrease the velocity of the flow towards the turbine