Meaning of alluvial sediment

1. The river deposited a layer of alluvial sediment along its banks during the spring flood.
2. The alluvial sediment in the streambed was a mixture of sand, silt, and gravel.
3. The farmers found that the alluvial sediment in the floodplain made the soil very fertile for growing crops.
4. Geologists study the composition of alluvial sediment to understand the history of a river's erosion and deposition patterns.
5. The construction of a dam upstream caused a buildup of alluvial sediment in the reservoir.
6. The miners sifted through the alluvial sediment in the creek to find traces of gold.
7. The archaeologists discovered ancient artifacts buried in layers of alluvial sediment near the river.
8. The alluvial sediment carried downstream by the river can contribute to the formation of new landforms over time.
9. The city built levees to protect against flooding and prevent alluvial sediment from covering the streets.
10. The engineer recommended dredging the harbor to remove accumulated alluvial sediment and improve navigation for ships.