Oroville Dam

In February 2017 water releases from Oroville Dam in Butte County, California about 80 miles north of Sacramento, caused damaged the dam’s main spillway and its emergency spillway. Nearly 200,000 residents downstream were evacuated as a precaution.

Since that time experts have been hired to find out what went wrong and how the dam, the tallest in the country, will be repaired. We continue to track the story, analyzing reports, talking to experts and investigating the wider implications of dam safety in the age of climate extremes.

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