Killer Lakes, Lake Monsters and Lake Fiascoes

Killer Lakes and Near Misses
I. Lake Biology
     Big animals
     Giardia – protozoan
     Cryptosporidium – protozoan; example: Milwaukee 1993
     Cyanobacterial toxins – immediate death of livestock; hepatotoxins are associated with increased liver cancer rates in many areas with eutrophic drinking water supplies

II. Lake Physics
    Hot springs and geysers – example: Yellowstone
    Seiches; supercharged surface seiche
        June 26, 1954 – Lake Michigan – 8 fishermen swept off a breakwater to their deaths when a seiche sped
                at >100 km/hr and caused a water surge of > 10 feet
        Surface waves
        Lake Okeechobee – waves reached 15 feet on September 16, 1928, and caused major flooding.
                Death toll was 1836, with 1879 injured (3rd deadliest natural disaster in the US)

III. Lake Chemistry
    Acid mine lakes
    Lake Nyos and Lake Manoun – Cameroon, Africa
        1984, Lake Manoun, 37 people killed
        1986, Lake Nyos, approximately 1800 people killed
        CO2 poisoning
        Remediation efforts

Lake Monsters

    Trophic analysis of the number of Loch Ness monsters that could exist in Loch Ness, Scotland
    ‘Champie’ in Lake Champlain

Lake Fiascoes

    Lake Peigneur, Louisiana, 20 November 1980
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