aluvial
silt
The fine sediment left behind when a flood recedes is called silt. Silt consists of particles smaller than sand and is often deposited on floodplains as the water recedes.
Rivers carry tons of silt to the sea. After the flood the road were covered in silt.
Silt
Flat land near the edges of rivers formed by mud and silt deposited by floods is called a delta. There are several deltas around the world.
The Nile flood brought a rich soil called silt and water for the crops.
Silt and Sediment.
I think it is silt. it helps the soil. it makes it more fertile.
The rivers carry silt and sediment, which they get from the mountains due to soil erosion. (the rivers flow extremely fast due to a steep slope) Due to less gradient of slope in the N.Plains, the rivers flow more sluggishly and are not able to carry the silt anymore. So, they deposit these minerals on their banks (forming flood plains if they flood) causing the land to become fertile.
The soil or sediments itself is called silt, and the landform that is often created at the mouths of rivers is called a river delta. Sand bars are also created in rivers and other waterways by deposited silt.
The fine sediment left behind a flood is known as silt. It is made up of particles that are smaller than sand and can be deposited by the water as it recedes. Silt can have both positive and negative impacts on the environment, depending on the quantity and location of its deposition.
The rivers carry silt and sediment, which they get from the mountains due to soil erosion. (the rivers flow extremely fast due to a steep slope) Due to less gradient of slope in the N.Plains, the rivers flow more sluggishly and are not able to carry the silt anymore. So, they deposit these minerals on their banks (forming flood plains if they flood) causing the land to become fertile.