1. Erosion

2. EROSION
The process by which wind, water, ice, or gravity transports (moves) soil and sediment from one location to another
The Grand Canyon was carved by the Colorado River over millions of years

3. Example of Erosion

4. Erosion

5. deposition – process in which material is laid down or dropped
sediment – rock & soil deposited by streams where the water current slows down
placer deposits – heavy minerals deposited in a river where the current slows down

6. Stream Erosion vs. Deposition

7. Erosion Control at a Construction Site

8. Silt fencing during construction doesn’t necessarily stop all erosion

9. A drainage channel upstream broke free and caused the soil from the farm land to severely erode into the nearby river

10. Before and After Erosion Measures

11. Delta (located in Chesapeake bay)
A delta is a fan-shaped deposit of sediment found at the mouth of a river.

12. Mississippi Delta in a Flood

13. Alluvial Fan - deposition of the land found where the elevation of the land decreases sharply

14. Flood Plain
floodplain – area along the river that forms when sediment is deposited from a river overflowing its banks

15. Image of a Dam
dam – barrier built to help control flooding and redirect the flow of water

16. Levee failure
levee – a buildup of sediment deposited along a river’s channel to control flooding

17. Levee failure in New Orleans

18. Flooding in New Orleans

19. Hurricane Katrina Flooding