I think sediment can enter a river through erosion. PLease dont use this anwser i dont think it is right
sediment
River efficiency is how easily a river can move water, sediment and bedload.
sediment
The main parts of a river include a channel, in which the water flows, and a floodplain-a flat region of a valley on either side of the channel. Through the channel and floodplain, water and sediment-material transported by the river, such as sand and silt-are transferred from ridges and mountains to the sea or to a lake. A river starts on hillsides as small channels, or rills. The rills combine to make larger channels or tributaries that eventually come together, forming distinct streams. The largest channels formed by this convergence of tributaries are rivers, and they can carry large quantities of fresh water and sediment across continents.
Clay, sand, silt.
mass movement and gravity
Sediment
they are deposited by sediment
J. M Knott has written: 'Sediment discharge data for selected sites in the Susitna River Basin, Alaska, 1981-82' -- subject(s): Sedimentation and deposition 'Sediment transport characteristics of selected streams in the Susitna River Basin, Alaska' -- subject(s): Stream measurements, Sedimentation and deposition, Bed load, Sediment transport, Measurement 'Sediment transport characteristics of selected streams in the Susitna River Basin, Alaska, October 1983 to September 1984' -- subject(s): Stream measurements, Sediment transport, Sedimentation and deposition
when rivers enter oceans or lakes, the water slows and sediment is deposited.
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.)
River hydraulics involves flowing water and its impact on the landscape. This includes the hydraulic characteristics of streams and rivers ranging from dam break analysis to sediment movement analysis.
In geography, a tributary is a river or stream that flows into a larger river. Tributaries contribute water and sediment to the main river, thereby influencing its flow and characteristics.
Sediment
When their velocity decreases
sediment
They erode sediments when it snakes back and forth across their valley. xxxJoanna