Mount St Helens Case Study

Cards (16)

  • Social: How many homes were destroyed?
    250 homes
  • Social: How many bridges were destroyed?
    47 bridges
  • Social: How many miles of railway were destroyed?
    15 miles
  • Social: How many miles of highway were destroyed?
    185 miles
  • Social: How many people died?
    57 people
  • Economic: How much were the damages?
    $860 million
  • Economic: Which industries were impacted?
    Tourism, fishing, timber and farming
  • Economic: How many board feet of timber were damaged?
    4.7 billion
  • Economic: How many transport vehicles were damaged?
    22 transport vehicles
  • Economic: How many rail cars were damaged?
    39 rail cars
  • Environmental: What happened to the top of the mountain during the eruption?
    400 metres were blown off of the top of the mountain
  • Environmental: How many plants and animals were affected during the eruption?
    Every plant and animal were killed within 25km of the eruption
  • Environmental: How many trees were flattened during the eruption?
    Every tree within 30km of the eruption was flattened
  • Environmental: What created the lahars?
    Water from snow and ice
  • Environmental: How many salmon died?
    12 million
  • Environmental: What was the one positive impact?
    Thousands of new pond and lake habitats were created which were quickly colonised