**Power+of+Water+Glossary

The Power Of Water

__**The Power of Water Glossary **__

﻿**Dredging**: Bring up or clear (something) from a river, harbor, or other area of water, with a dredge. **F﻿loodplain**: A relatively flat area on either side of a river that floods when the water levels rise higher than normal and the river overflows its banks. **Fraser Basin**: The area drained by the Fraser River and it's 13 main watersheds. Roughly the size of Britain or California. **Dike**: A long wall of soil or other material built along the banks of a river to prevent flooding. **Sediment**: Materials such as sand, gravel, silt, or mud that are carried and deposited by wind, water, or ice. **Weathering**: The breakdown of rocks by physical, chemical, or biological process. **Erosion**: The wearing away of Earth's surface, caused by the movement of materials from one place to another. ***weathering and erosion are different in the fact that weathering is the breaking down of rocks into sediment, and erosion is the movement of the sediment to another place*** **Deposition**: The process in whereby sediment settles to the bottom of a river or lake. **Delta**: A flat area of land formed by sediment that has settled at the mouth of a river over many thousands of years.