River deltas are known for their dynamic nature. Most of the rivers naturally carry silt that eventually enters the ocean and settles at the bottom, continuously changing the shape of the seabed. Seasonal events, such as freshets - when glaciers’ snowmelt enters the river stream - are the time when the seafloor at deltas can change rapidly causing events called “slope failures” or “subsea landslides”.  Fraser River delta is one such location where subsea landslides occur regularly, in particular during the spring freshet season (May-June). Natural Resources Canada leads several research programs studying seafloor processes and conducts regular surveys of the delta area. 

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