If you live in California, you've heard predictions of a disastrous earthquake dubbed "the big one." Now, scientists are warning of an epic rainstorm that could cause three times as much damage.

The U.S. Army Corps is warning Californians of "very significant loss of life and economic impacts" that could result from a rare but extremely serious storm, the Los Angeles Times reports. Scientists fear a weeks-long torrent that could "inundate cities and form lakes in the Central Valley and Mojave Desert," displacing more than 1.5 million people and causing $725 billion in damage statewide.
Such a storm has an estimated 1 in 900 chance of occurring in any given year—but more extreme weather patterns caused by climate change mean that the risk is likely understated. "A newer study suggests the chances of seeing another flood of that magnitude over the next 40 years are about 50-50," one expert told the Times.
The state's infrastructure is not prepared to handle the deluge. At 60 years old, the Whittier Narrows Dam is at particular risk of collapsing drastically in the event, sending "epic runoff" flooding into heavily populated areas from Pico Rivera to Long Beach. Upgrading that dam is now the Army Corps's No. 1 priority nationwide—but it needs $600 million in federal funding to do so.
FULL STORY: Rare L.A. mega-storm could overwhelm dam and flood dozens of cities, experts say

Montreal Mall to Become 6,000 Housing Units
Place Versailles will be transformed into a mixed-use complex over the next 25 years.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

California High-Speed Rail's Plan to Right Itself
The railroad's new CEO thinks he can get the project back on track. The stars will need to align this summer.

Nevada Legislature Unanimously Passes Regional Rail Bill
If signed by the governor, the bill will create a task force aimed at developing a regional passenger rail system.

How Infrastructure Shapes Public Trust
A city engineer argues that planners must go beyond code compliance to ensure public infrastructure is truly accessible to all users.

Photos: In Over a Dozen Cities, Housing Activists Connect HUD Cuts and Local Issues
We share images from six of the cities around the country where members of three national organizing networks took action on May 20 to protest cuts to federal housing funding and lift up local solutions.
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