RIVERMORPHOLOGY

1. Discharge and Channel Evolution

2. Alluvial Channel Patterns

3. Floodplain Development

4. Terraces

Copyright © Dan Parsons 2002

Channel Forming Discharges

Bankfull Discharge

AlluvialAlluvialChannelChannelPatternsPatterns

HOp. 11

Straight Channels

Shibetsu River near the Hokaido area

POOLPOOL

RIFFLERIFFLE

Velocity Reversal Hypothesis

HOp. 12A

Flow Convergence Hypothesis

HOp. 12C

Straight Channels

Shibetsu River near the Hokaido area

Meandering Pattern

Copyright © Norm Catto 2002

POOLPOOL

RIFFLERIFFLE

POOLPOOL RIFFLERIFFLE

11

22

33

HOp. 12B

11

22

33

HOp. 12B

Meandering Pattern

Copyright © Norm Catto 2002

Denali National Park, Alaska, USA © Daryl Dagesse 2002

Braided Pattern

Braided Pattern

Central Bar Hypothesis

HOp. 13A

BraidedPattern

Transverse Bar Migration HypothesisHOp. 13B

Copyright © Martin Geertsema 2002

Anastomosed Pattern

Copyright © Richard Kesel 2002

Floodplain Development

Copyright © Simon Robertson 2002

LateralAccretion

Vertical Accretion

Vertical Accretion

northwestern China near Urumchi, © Matthias Jakob 2002

Terrace Formation

Gower Gulch, Death Valley, CA (© Bernie Bauer 2002)

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