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Flooding
The most common--and most expensive--geologic hazard.
Flood, the Routine Disaster
Floods are disasters, but they happen all the time.
Jökulhlaups - Glacial Outburst Floods
Jökulhlaups are peculiar glacial floods, as impressive as the people who live with them.
River Bed Movement
Floods can literally change the map when the river they affect marks a border.
The Comeback of Noah's Flood
Once flame-war fuel in the 1800s, the bibilical flood story of Noah is now just another marvel of modern science.
The St. Francis Dam Break of 1928
Not a week after it was finished, this dam failed killing more than 450 people. A short article on the site's deadly geology, with many photos, by Garry Hayes.