Question

Discuss in detail the various types of landforms formed by rivers on Earth surface? What is the significance of these landforms?

Answer 1

Approach:

• Write an introduction
• Divide river course into upper, middle and lower
• Write one to two lines about landforms formed by river
• And significance at the end

Regions which receive heavy rainfall running water is considered the most important of the geomorphic agents in bringing about the degradation of the land surface.

Most of the erosional landforms made by running water are associated with vigorous and youthful rivers flowing over steep gradients.

Landforms formed by rivers on Earth Surface:

The upper course of River (Erosion)

1. V-Shaped Valley, George, Canyon
2. Waterfalls
3. Potholes
4. Rapids and Cataracts

Middle Course (Erosion + Deposition)

1. Ox-bow lake
2. Flood plains
3. Levees
4. Alluvial fans

Lower Course:(Deposition)

1. Alluvial Plains
2. Delta
3. Estuary

Significance of these landforms:

• Provide different types of ecosystem
• Promotes biological diversity
• Waterfall – Electricity production

Alluvial Plain – most fertile area - High crop production
Delta – Mangroves protects coastal areas from erosion.