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    Rights: Acknowledgement: Thomas Neumann, NASA GSFC, Creative Commons 2.0 Published 27 June 2017 Size: 180 KB Referencing Hub media

    When temperatures rise above the freezing point of water, snow starts to melt and runs off into streams. This event occurs seasonally in spring or when temperatures rise.

    Acknowledgement: Thomas Neumann, NASA GSFC, Creative Commons 2.0