Channel Morphology YouTube Lecture Handout

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Channel Morphology YouTube Lecture Handout

Channel Morphology

The study of the channel pattern and the channel geometry at several points along a river channel, including the network of tributaries within the drainage basin. Also known as River Channel morphology

Dr. Manishika Jain explains what is channel morphology and the various 5 ways to understand it: 1. Channel Geometry2. Fluid Dynamics3. Channel Bed Topography4. Hydraulic Geometry5. Channel Types & Patterns

Illustration: Channel Morphology

What to Study?

Illustration: What to Study?

Factors Affecting River Channel Morphology

Discharge

  • Volume of water flowing per unit time.
  • High discharge causes erosion, transportation, and deposition in high rate

Velocity

  • Fast moving rivers carry greater amount of materials.
  • Depends on the gradient and discharge of river.

Lithology

  • Nature of rocks effects channel morphology.
  • Some rocks are easily eroded than others.

Load

  • Loaded river will not erode and transport the materials

Channel Geometry: Size & Shape of Cross Sectional and Longitudinal Channel

Illustration: Channel Geometry: Size & Shape of Cross Sectional and Longitudinal Channel

Channel Fluid Dynamics

Illustration: Channel Fluid Dynamics

Channel Bed Topography

Illustration: Channel Bed Topography

Hydraulic Geometry

Illustration: Hydraulic Geometry

Channel Types & Patterns

Manishika