Folsom Dam is Being Raised. What That Means for Droughts, Boating and Your Flood Insurance

Folsom Dam has long quietly served as a backstop for Sacramento, offering critical flood protection to one of the most at-risk metropolitan areas in the country. But a few scary winter storms in the 1980s and 1990s proved that the dam and the region’s extensive system of river levees weren’t as fail-safe as thought.

That’s prompted several billion dollars of flood control work since then.