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They started off by a midcontinet rift which created the a basin for the Lake Superior. The Saint Lawrence rift which created the basin for Lake Ontario and Lake Erie. Non of these basins were even close to being filled up with water until around 10,000 years ago. The Laurentide sheet then retreated and left a lot of melt water which then filled the basins which became the Great Lakes. This took a little more than a billion years from start to what it is today.
What else can I help you with?
What great American lake was formed by accident?
The Great salt lake
Is Lake Tahoe a natural lake?
Lake Tahoe on the border of California & Nevada is not man made. It is a natural crater lake.
Is the Great Salt Lake natural or man made?
The Great Salt Lake is a natural body of water, formed by the remnants of prehistoric Lake Bonneville, which existed during the last Ice Age. It is a saline lake that has fluctuated in size due to natural processes and changing climate conditions. However, human activities, such as water diversion for agriculture and urban development, have significantly impacted its water levels and salinity.
Are the great lake man made or natural?
The Great Lakes are a natural feature.
What kind of natural lake is formed by a river?
usually lake are formed by rivers are formed by meanders, twists and turns in a river, overlapping and not going over the turn, filling up into a lake or pond.
Is the Great Salt Lake natural?
Yes, 100% natural.
Is Lake Erie man made or natural?
The Great Lakes are a natural feature.
What is the name of the natural lake found on great inagua?
lake Rosa
When was lake great bear formed?
June of 1870
What is a natural way a lake can be formed?
By peeing in a ditch for a 100 years ---------------- the most common way is by underground aquifers. They can begin to pierce the soil above it due to heat and contractions of the earths core . The Salt Lake in Utah was formed by the Great Plain main aquifer.
What great lake does water come from?
formed by the melted waters from glaciers
What is the Great Salt Lake?
The Great Salt Lake is the largest natural lake west of the Mississippi River. It is all that remains of a prehistoric inland sea. The Great Salt Lake has no natural drainage, and as the water evaporates, the salt remains. As result, the Great Salt Lake is more than seven times salter than the oceans. People can easily float in the dense water.
