Peak discharges from Ice Age floods may not be explained by ice dams alone. A major earthquake —or even a cosmic impact into the ice sheet— could unleash forces equal to a magnitude 8 quake, fracturing ice and triggering catastrophic floods. Some geologists suggest multiple events, but even a single dam holding back 2,000 feet of water stretches plausibility. Resealing and failing again and again only multiplies the problem. | The Randall Carlson

❄️🏠 Don’t let ice dams wreak havoc this winter! Learn how to treat and prevent them before they cause damage. | This Old House