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Meltwater floods

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  • 08-01-2010 9:19am
    #1
    red menace
    Closed Accounts Posts: 1,462 ✭✭✭


    Is there any concern at this stage that as the snow thaws on the mountains, it will create flooding as it melts and moves from groundwater and on into rivers/streams?
    Seems like there is significant accumulations in places?


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    #2
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,997 Mod ✭✭✭✭DOCARCH


    red menace wrote: »
    Is there any concern at this stage that as the snow thaws on the mountains, it will create flooding as it melts and moves from groundwater and on into rivers/streams?
    Seems like there is significant accumulations in places?

    Indications are at the moment that if there is a thaw, it will be gentle. Of course if there was a rapid thaw, then there certainly would be problems.


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    #3
    red menace
    Closed Accounts Posts: 1,462 ✭✭✭red menace


    Density of Snow =
    Snow, freshly fallen 160 Kg per Cubic metre
    Snow, compacted 481 Kg per cubic metre


    Snow water equivalent (SWE) is defined as the depth of water (in millimetres) of snow cover on a horizontal surface area if that snow cover is completely melted. SWE is related to snow depth and density by

    SWE (millimetres) = depth (metres) x density (kilogram per cubic metre).

    I am going to assume 5 Cms of Snow cover coz I am lazy and its easy to multiply

    10 cm = .1 of a metre
    5 cm = .05 of a metre
    Compacted
    .05 * 481 = 24 mm

    Fresh fall

    .05 * 160 = 8 mm

    So could be quite wet


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    #4
    GSF
    Registered Users Posts: 1,731 ✭✭✭GSF


    DOCARCH wrote: »
    Indications are at the moment that if there is a thaw, it will be gentle.
    Bit like the soft landing in the property market perhaps? :D Whatever happens the government will say it was unforseeable.....


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    #5
    Sponge Bob
    Banned (with Prison Access) Posts: 25,234 ✭✭✭✭Sponge Bob


    GSF wrote: »
    Whatever happens the government will say it was unforseeable.....

    Lehman Brothers snowed all over Dublin in the last few days did they ???


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