Stop in for a cup of coffee

dukeboy_318 said

pretty much runs along the Mississippi river up to the Ohio River Valley. Not near as active as the San Andreas, but when it goes, it has a much higher likelihood of being a high 6 or high earthquake. And its all in bedrock so the earthquake travels out 5-10 times farther than an earthquake in say CA or the west coast. About 150 years ago, they had an earthquake so powerful, the mississippi river reversed course and flowed south to north.

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It's been pretty quiet out here lately. All that rumblin' out there by China Lake NWC must have relieved a great deal of pressure. After the stay at home orders rescind I need to make a trip up north and check this out.

It's only 100? miles from here.
From what I remember of the Mississippi Valley, there looked like very little elevation change for 100s of miles. All it would take for the river to flow south to north would be just a tiny bit of change in elevation for the direction to change, and water does flow downhill.