Smooth water meets rough at site of a man made weir. Weirs are established to reduce erosion during storm events by controling the velocity of the river. Flooded Don river during storm. Toronto.
1701225 don river the don river Toronto urban city current flash flood flood flooding floods brown muddy dirty flowing flow rainstorm storm swollen water climate change global warming dangerous environment nature natural shore shoreline river bank bank smooth rough weir turbulent turbulence
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