1. RIVER MORPHOLOGY Discharge and Channel Evolution
Alluvial Channel Patterns
Floodplain Development
Terraces
RIVER MORPHOLOGY

2. Channel Forming Discharges
Bankfull Discharge
Channel bend with a region of reverse flow at the inner bank - this produces a shear layer within the flow (flow visualization with surface streamers).  Flow in form top of picture.
Copyright © Dan Parsons 2002

3. Alluvial Channel Patterns
HOp. 11

4. Straight Channels
Shibetsu River near the Hokaido area

5. POOL
RIFFLE

6. Velocity Reversal Hypothesis
HOp. 12A

7. Flow Convergence Hypothesis
HOp. 12C

8. Straight Channels
Shibetsu River near the Hokaido area

9. Meandering Pattern
Copyright © Norm Catto 2002

10. RIFFLE
POOL
POOL
RIFFLE

11. 2 3 1
Meandering Pattern
HOp. 12B

13. 2 3 1
Meandering Pattern
HOp. 12B

14. Meandering Pattern
Copyright © Norm Catto 2002

15. Braided Pattern Denali National Park, Alaska, USA © Daryl Dagesse 2002
Braided stream, Denali National Park, Alaska, USA. The combination of high sediment loads and seasonally variable discharge has resulted in a braided pattern to this river. Only during the highest flows is the majority of this material mobilized as bedload.
Denali National Park, Alaska, USA © Daryl Dagesse 2002

16. Braided Pattern
Central Bar Hypothesis
HOp. 13A

17. Braided Pattern
Transverse Bar Migration Hypothesis
HOp. 13B

18. Anastomosed Pattern Copyright © Martin Geertsema 2002
Combination of braiding and anastomozing channel patterns, Halfway River, northern British Columbia.
Copyright © Martin Geertsema 2002

19. Floodplain Development
Meandering river, Alaska.
Copyright © Richard Kesel 2002

20. Lateral Accretion Copyright © Simon Robertson 2002
Point bar on the Herbert River, Queensland. 
Copyright © Simon Robertson 2002

21. Vertical Accretion

22. Vertical Accretion

23. Terrace Formation Fluvial terrace, northwestern China near Urumchi.
northwestern China near Urumchi, © Matthias Jakob 2002

24. Gower Gulch, Death Valley, CA (© Bernie Bauer 2002)
Sequence of depositional terraces set against harder sedimentary rock (light color) during episodic flash floods. Main channel bottom is in foreground. Gower Gulch, Death Valley, California.
Gower Gulch, Death Valley, CA (© Bernie Bauer 2002)

25. Cave River terraces, South Island, New Zealand.
Cave River terraces, South Island, New Zealand Copyright © Keith Richards 2002