[Coyoteman]

Isn't that a rather "local" piece of flooding from a breach in an ice-dam holding back a large lake of meltwater?

Yes, of course.

[muawiyah]

BTW, there's yet another instance of this in Canada. Guy spent ages getting his idea accepted, but then one day the folks realized the boulders they were looking at weren't exactly "rafted in" on the ice!

They were "tumbled".