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Testimony: Addressing California’s Growing Flood Risk

By Ellen Hanak

As a reminder that California is never more than one big storm away from flood problems—even when reeling from drought—the topic of an Assembly committee hearing yesterday was flood management.

Report

California’s Water: Preparing for Floods

By Ellen Hanak, Jay Lund, Jeffrey Mount, Matt Kondolf ...

One in five residents and billions of dollars in assets are vulnerable to flooding. Climate change brings new vulnerabilities. This brief describes new tools and approaches that can reduce these risks.

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Delta Island Flooding (No Repairs)

This animation depicts how the Delta may change over time as a result of levee failures from earthquakes and floods. Islands that lie below sea level will flood after levee failures (becoming blue). If islands are not repaired after flooding, the entire area is likely to be flooded by 2055.

blog post

The Mad Dash to Save Dairy Cattle as Tulare Basin Flooded

By Caitlin Peterson, Sarah Bardeen

When low-elevation snow melted during a warm storm in March, the resulting flood in the Tulare Lake basin put 100,000 cattle and over a dozen dairy farms at risk. This week, Western United Dairies CEO Anja Raudabaugh gives us a gripping account of what happened as the lake began to refill.

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Delta Island Flooding (With Repairs)

This animation depicts how the Delta may change over time as a result of levee failures from earthquakes and floods. Islands that lie below sea level will flood after levee failures (becoming blue). Islands with sufficiently high land and asset values are repaired each time they are flooded (becoming white again). Other islands remain flooded.

blog post

Commentary: Californians Need to Do More to Prepare for Wet Years

By Letitia Grenier, Ellen Hanak

Climate change is supercharging the extremes of drought and flood in California. But our infrastructure and institutions remain woefully underprepared for rising flood risk and increasingly erratic rainfall. It’s time to take this threat—and this opportunity—seriously and accelerate preparations.

blog post

An Epic Snowpack May Test Water Management in the San Joaquin Valley

By Jeffrey Mount

Nothing improves our understanding of water like a “stress test”—and it’s starting to look like the San Joaquin Valley will face one this spring, when California’s epic snowpack begins to melt. This week on our blog, Jeff Mount speculates about what may lie ahead for the valley.

blog post

Tropical Storm Hilary Wallops Southern California

By Jeffrey Mount

Tropical Storm Hilary hammered Southern California on Sunday, after making a destructive run over Baja California. The damage was real, but thankfully there was no loss of life. But there are a few things we do know—or can surmise—about why this rare event occurred, and the dangers such events will pose to California now and in the future.

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