Towyn, Wales - Coastal Environments, Flooding

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  • Towyn, Wales - Coastal Environments - Flooding
    • Information
      • February 1990
      • North Wales
    • Causes
      • Human
        • Inadequate maintenance of 140 year old sea wall, weakened further 14 days before this event
        • Failure of 3 km embankment
        • Development of houses required culverts to drain surface run-off underground into the Irish Sea
      • Physical
        • Deep low pressure system created gale force winds (gusts 70 mph) in the Irish Sea
        • Storm surge of 10 metre high waves
        • Low lying, is level or only a few metres above sea level
    • Consequences
      • Physical
        • Flooding of 10 km2 of land, worse affected submerged under 2 m
        • Farmland contaminated with salt water
      • Socio-Economic
        • Over 5000 affected, cost of restoring homes & businesses £30 million
        • 3000 put in temporary accommodation
        • 6000 caravans damanged
        • 40%/15% had no contents/buildings insurance
        • An estimated £10 million needed to build new coastal defences

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