1. 15-3
Stream Deposition

2. Taking a dump! When rivers flow slowly they dump their load.
In the form of sediment…

3. Deltas Streams deposit sediment on land and water.
Velocity decrease as water enters body of water
Load deposited at the river mouth

4. Deltas Triangular in shape Tides, sediment type, waves, water depths
Usually
Tides, sediment type, waves, water depths

5. Alluvial Fan Fan shaped deposit Forms on land
Slope of land decreases quickly
Mountain areas

6. Flood plains
Part of the valley that may be covered by water in a flood

7. Natural levees Stream overflows
Slows – deposits sediment along river banks
Accumulates over time

8. Finer Flood Sediments Spread out over flood plains
Soils rich in nutrients

9. Human Impacts on Flooding
Can affect the number of floods
Vegetation loss
Logging
Forest fires

10. Flood Control
Forest and soil conservation
Man-made levees
Dams

11. Overflow channels
Floodways

12. Life Cycles of Lakes Rivers - Flow to lakes / oceans
Form lakes in depressions

13. Lakes – Water sources Rain Springs Short lived – geologically
Climate change
Water source leaves
Filled with sediment