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  • Created by: Niamh
  • Created on: 28-04-14 20:59
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  • Walton-on-the-Naze
    • Facts
      • Coastal town in Essex
      • Walton can be split into two areas
        • Northern area: not protected b/c the Environment Agency does not consider the buildings worth saving
        • Southern part: protected because of the coastal town of Walton with its population of 12,000
    • Problem
      • Suffers from coastal erosion due to the types of rock which make up the cliff
        • Red Crag
          • Both are easily eroded by the sea
        • London Clay
          • Both are easily eroded by the sea
        • Slumping  makes the defense of the area even more complex
        • Longshore drift moves sand along the coastline from south to north
    • Management
      • 1977 - Major project completed on the southern part of the coastline
        • Groynes would help to stop longshore drift and keep the beach in place
        • Breakwaters, which are large groynes, were placed at regular intervals b/c of the power of longshore drift
        • The cliff was regraded to produce a gentler slope
          • Planted with a variety of shrubs and trees to stop people scrambling
        • Drainage channels installed to allow water to flow underground through special tunnels and out onto the beach through holes in the seawall
        • At the bottom of the cliff there is a sea wall to protect the London clay which is very easily eroded by the sea
      • 1998 - The council paid £167,000 for 300 tonnes of Leicester granite to be placed around the Tower breakwater
        • The rip-rap has slowed down the erosion in this area but has not stopped it
      • 1999 - Beach in front of the cliffs at the northern part was replenished with sand and gravel
        • The majority of this material has been removed by 2003 illustrating the power of longshore drift


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