Spur

What is the Spur?

Spur is a permeable and temporary structure. These structures are constructed on the curve of a river to protect the river bank from erosion. This type of structure is most suitable where the river carries sediment load in suspension.

Don’t be confused about spur and groynes, both are the same type of structure but the main difference is that groynes are an impervious and permanent structure whereas spur is a permeable and temporary structure.

Spur

The length of a spur is depend on mainly two factors;

  1. Width of the river
  2. And, the sharpness of the curve of a river

What are the main function of a spur

The main function of a spur is as follows

  1. To reduce the velocity of flow
  2. To get deposit sediment
  3. Ultimately, protect the river bank from erosion.

Types of Spur

  1. Bamboo spur
  2. Timber spur
  3. Boulder spur

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