California Department of Water Resources

Scott Cahill: Collapse Risk At The Oroville Dam Is Still Unacceptably High

Bungled repairs and new concerns at the tallest US dam
Sunday, August 20, 2017, 5:20 PM

Remember the crisis earlier this year at the Oroville Dam? 

The overflow from California's winter of heavy rain threatened to overpower our country's tallest dam. A cascading failure of the dam's main gates, its primarily spillway AND its emergency spillway had the world watching hour by hour to see if a catastrophic breach was going to occur.

Fortunately, the rains stopped long enough for the situation to be brought under control. The dam remains in place and repair crews have been working all spring and summer.

But should we breathe easy at this point? Not at all, says dam safety expert Scott Cahill.  » Read more



The Mother Of All Financial Bubbles

Will be unimaginably destructive when it bursts
Wednesday, February 22, 2017, 11:45 PM

The main lesson from Oroville -- or Fukushima, or Katrina --  is that governments do a poor job of relating accurate information to their citizens when big threats are involved. Part of that is likely due to a desire to avoid stoking fear. Part probably due to politics and bureaucracy. And part probably due to plain old incompetence.

Regardless of the cause, it means that the public -- even the vigilant ones -- suffer information deficits when it matters most. Simply put, the authorities do not share all the facts necessary for making informed decisions.

Which brings us to one of the truly great risks we're facing today. One with much more destructive potential than a single failed dam but, like Oroville, one the authorities are desperate to keep us in the dark about. » Read more


sputnik international

Expert: What You Need To Know About The Oroville Dam Crisis

And why our entire national dam system is as vulnerable
Monday, February 13, 2017, 9:06 PM

To make sense of the fast-developing situation at California's Oroville Dam, Chris spoke today with Scott Cahill, an expert with 40 years of experience on large construction and development projects on hundreds of dams, many of them earthen embankment ones like the dam at Oroville. Scott has authored numerous white papers on dam management, he's a FEMA trainer for dam safety, and is the current owner of Watershed Services of Ohio which specializes in dam projects across the eastern US. Suffice it to say, he knows his "dam" stuff. » Read more