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Managing coastal hazards - EduqasCase study - Minehead and Portlock

Hard engineering management involves using artificial structures, whereas soft engineering management is a more sustainable and natural approach to manage coastal erosion.

Part of GeographyLandscape and physical processes

Case study - conflicting views - Minehead and Portlock

The town of Minehead is situated on the north coast of Somerset. The town was a prosperous port and has since developed as a holiday resort. Butlins decided to build a holiday camp there in 1962. Major flooding by the sea occurred in 1910, 1981, 1992 and 1996.

Interest groups include:

  • local residents
  • Butlins
  • local businesses
  • local council
  • the Environment Agency

Further flooding of private houses and businesses was considered unacceptable. The future costs of further flooding were estimated to be 拢21 million. It was decided to adopt a approach and to spend 拢12.5 million on:

  • a sea wall
  • rock armour
  • beach nourishment
  • four large rock groynes

Some argued against the scheme, stating that it was too expensive and looked unattractive. Developers gave careful consideration to environmental factors, such as preserving sea views and providing seating and an attractive promenade.

On 15 May 2001, the new sea defences were officially opened.

Minehead and Porlock are located south of the Bristol Channel, in South-West England.

Porlock Bay is located 20 km to the west of Minehead. The area is north of Porlock village and is a combination of salt marsh and farmland. A natural shingle beach protects the farmland from flooding.

Interest groups include:

  • National Trust
  • National Park Authority
  • local residents
  • environmental groups (the area is a Site of Special Scientific Interest (SSSI))
  • farmers (coastal grazing marsh)

In 1996, the sea broke through the shingle ridge and caused extensive flooding. In response, a working group recommended a managed retreat approach where some farmland would be lost in the hope of stopping flash flooding from occurring. Planners decided that it would not be cost effective to build expensive sea defences to protect land that is low in value. Environmentalists argued it would recreate tidal habitats and encourage salt marsh species of plants and insects to develop. Some local residents protested against the decision, stating that it would cut the local bus service route in two.