it's called the river's load.
Get a giant net
It's called transportation.
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The total quantity of sediment carried by a river is called its sediment load. This includes both suspended sediment (particles floating in the water) and bedload (particles rolling or sliding along the riverbed).
The sediment itself is called silt, and it often is deposited at the mouth of rivers and forms a landform called a river delta.
bedload
deposition
Sediment is dirt, rocks, and sand carried by a river.
To find river bedload, you can collect sediment samples from the river bed and analyze them in a laboratory. Another method is to use a sediment trap or gauge to measure the amount of sediment transported by the river over time. This can help determine the size and composition of the bedload in the river.
The size of the sediment would decrease further downstream (where there is a greater volume of water) as there is more energy in the flow. Therefore more erosion will occur and the sediment will rub together with other materials i.e other rocks or the river bed (this is called attrition). The sediment will therefore reduce in size but there will be a greater amount of it. (The amount of sediment is called the discharge.)
the amount of sediment a river is carrying during flow
By a river? Deposition.