In Norse Runes, there is a Rune about Waterfall.
Laguz:

The shape of the Rune speaks of water building up and cascading over the edge – a waterfall.
The Rune Poems also discuss the Rune as water in general.
Water is eddying stream
and broad geyser
and land of the fish.
A waterfall is a River which falls from a mountainside
But ornaments are of gold.
The ocean seems interminable to men, if they venture on the rolling bark and the waves of the see terrify them and the courser of the deep heed not its bridle
(these three from “Runic and Heroic Poems” as edited by Bruce Dickins 1915, reprint 1968)
And, this one, a more modern translation, from “The Rune Poem” translated and annotated by Jim Paul,
Seasick and tired of water,
then terrified as the storm-surge
sweeps over the ship.
All of the Rune poems speak of large change – whether a waterfall over a cliff, or a storm surge at sea, and the ability to be flexible and resilient in the face of this watery change.