The failure of the St. Francis Dam unleashed a devastating flood that destroyed entire communities. This video takes a close look at the disaster site, uncovering the scale and impact of this historic ...

As emergency crews fight wildfires across the province this year, three-quarters of a century ago, Winnipeg and Manitoba were ...

In his 1939 book “ The History of Santa Barbara County, State of California, Its People and Its Resources,” historian Owen H. O’Neill wrote that during those floods, “immense slides of ...

To illustrate how climate change is increasing flood risk, the report used as a benchmark the megaflood of 1861-1862, which dumped 35 inches of rain on Southern California in a month, inundated ...

Climate change is upping the odds that a disastrous flood with up to 10 feet of water might actually happen in California. The ARkStorm may not be real yet, but it's scientifically plausible.

The last such megaflood happened in 1861, inundating a 300 mile-long (483km) stretch of the Central Valley and large portions of modern-day Los Angeles with water. It could happen again, any time ...

An ARkStorm—named for an atmospheric river thought of as a 1-in-1,000-year event—was developed as a weather model in 2011 and is based on weather patterns in California between 1861 and 1862 ...

In the context of 1861–’62 and the even more extreme water years that could occur in the next several decades, 2022-’23 was relatively mild, he said.

In California, overwhelmed storm drains sent polluted water to the sea. Roads became waterways, sinkholes opened up to capture cars and their drivers, and houses flooded. At least 22 people died.

During the great flood of 1861-1862, a train of storms dumped record amounts of rain on California. Sixty-six inches of rain fell on Los Angeles, more than four times the yearly average.