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Fact Sheet

Water Use in California

By Jeffrey Mount, Ellen Hanak, Caitlin Peterson

To understand California’s water, start here. Water use in California varies dramatically between wet and dry years: learn who’s using California’s water, where, and how much.

Fact Sheet

Water Use in California’s Agriculture

By Caitlin Peterson, Alvar Escriva-Bou, Josué Medellín-Azuara, Spencer Cole

California is an agricultural powerhouse that relies heavily on irrigation. Discover how much water the sector uses and how groundwater laws and climate change are bringing change.

Fact Sheet

Water Use in California’s Environment

By Jeffrey Mount, Caitlin Peterson, Gokce Sencan

What exactly is “environmental water,” and how much water does California’s environment actually use? This explainer sticks to the facts—and dispels a few myths in the process.

Fact Sheet

Water Use in California’s Communities

By Andrew Ayres, Caitlin Peterson, Annabelle Rosser

Even as California’s population has grown by millions, its per-capita water use has declined. Communities are finding ways to boost resilience in the face of climate change.

blog post

Reservoirs Are Full, But Let’s Not Celebrate Just Yet

By Greg Gartrell

After three very dry years, California’s reservoirs will be full again this spring. That beats the alternative, but what will it mean for water supplies over the next few years? PPIC Water Policy Center adjunct fellow Greg Gartrell does the math.

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

Testimony: Adapting California’s Water Rights System to the 21st-Century Climate

By Ellen Hanak, Brian Gray, Jeffrey Mount

PPIC Water Policy Center director Ellen Hanak and senior fellows Brian Gray and Jeffrey Mount testified before the Assembly Water, Parks, and Wildlife Committee Informational Hearing, “How Should California’s Water Right System Adapt to a 21st Century Climate?” today. Read their prepared remarks.

blog post

Commentary: Lack of Water Is Forcing Major Changes in Valley Agriculture, New Analysis Says

By Alvar Escriva-Bou, Ellen Hanak, Josué Medellín-Azuara

Agriculture is a key driver of the regional economy in the San Joaquin Valley, but the valley faces a future with less water: our latest research finds that average annual water supplies could decline by 20% by 2040. How can the valley adjust? We found that with a few changes, valley agriculture could continue to thrive—even with a smaller footprint.

blog post

Can Nine Atmospheric Rivers Recharge California’s Groundwater?

By Sarah Bardeen

Last month’s storms dropped immense amounts of water on California. Now, many people are wondering if we’ve been able to sock away any of that bounty—so we asked groundwater hydrologist Helen Dahlke to give us the skinny.

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