Report a correction

Lake Agassiz

13,000 BCE – 8,200 BCE · na-lake-agassiz

Lake Agassiz was a lake of meltwater that gathered in front of the ice sheet in what is now Manitoba, Ontario, Minnesota and North Dakota. Agassiz is the leading candidate explanation for both the Younger Dryas and the 8.2-kiloyear event: fresh water on the North Atlantic weakens the thermohaline circulation and cools Europe rapidly. The mechanism remains debated, not least because the outflow route is hard to establish. The lake bed left the Red River Valley, some of the flattest and most fertile farmland in the world, in Manitoba, North Dakota and Minnesota.

Factual errors are corrected without argument once documented. What you send is read by a person and checked against sources — nothing changes automatically. See the editorial policy.

Describe as precisely as you can what does not hold.
Optional.
Optional, but it helps enormously. A book, an article, a link — anything we can check against.
Optional. Only if you want a reply.