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Farmland in Transition: The San Joaquin Valley

As the San Joaquin Valley works to bring its groundwater basins into balance, hundreds of thousands of acres of irrigated farmland may come out of production. How do we manage all this newly fallowed land? Our latest research examines whether water-limited agriculture might help ease the transition—and what other management practices could mitigate dust and air quality concerns in the valley.

Report

Land Transitions and Dust in the San Joaquin Valley

By Andrew Ayres, Jaymin Kwon, Joy Collins

Agricultural operations and wind erosion are two of the largest sources of dust in the San Joaquin Valley, and the valley’s air quality may decline with increased farmland fallowing and a warmer, drier climate. This will impact low-income, rural communities first and foremost, but proactive management can help identify high-risk areas and direct funding to cost-effective interventions.

Report

Exploring the Potential for Water-Limited Agriculture in the San Joaquin Valley

By Caitlin Peterson, Cameron Pittelkow, Mark Lundy

As irrigated farmland comes out of production in the San Joaquin Valley, valley residents will face increased pests, weeds, and dust—as well as a loss of employment and economic activity. Water-limited cropping is one alternative to fallowing that can improve soil health and air quality, create habitat, and keep land in production.

blog post

Commentary: Four Strategies for Managing California’s Crucial Watershed

By Ellen Hanak, Greg Gartrell

California is not doing a good job of tracking changes to the Sacramento–San Joaquin Delta and its watershed. In our recent commentary, we argue that’s making it even tougher to manage the water that is available for the benefit of the state’s communities, economy, and environment.

Fact Sheet

The Sacramento–San Joaquin Delta

By Jeffrey Mount, Ellen Hanak, Greg Gartrell

The Sacramento–San Joaquin Delta is California’s largest estuary and a vital hub in the state’s water supply system. Three interlinked issues currently face the Delta: an increasingly unreliable water supply, a decline in ecosystem health, and a fragile system of levees. Learn more about this key watershed in our new fact sheet.

Policy Brief

Policy Brief: Tracking Where Water Goes in a Changing Sacramento–San Joaquin Delta

By Greg Gartrell, Jeffrey Mount, Ellen Hanak

The Sacramento–San Joaquin Delta supplies water to roughly 30 million Californians, over 6 million acres of farmland, and countless ecosystems. But the watershed’s climate is changing: recent decades have seen record warmth, higher evaporation, and declining snowpack. We track where the water is going—and how to adapt.

data set

PPIC Delta Water Accounting

These spreadsheets contain all data, sources, and methods used to calculate water use in California’s Sacramento–San Joaquin Delta, including estimates of outflow needed to meet regulations; ecological, export, and municipal and industrial uses; and watershed-level water sources and upstream depletions.

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