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Racial Disparities in Traffic Stops

By Magnus Lofstrom, Joseph Hayes, Brandon Martin, Deepak Premkumar

Traffic stops have emerged as a key driver of racial disparities in law enforcement and an area of potential reform. Our new report examines whether certain types of traffic stops could be enforced in alternative ways that reduce racial disparities and risks to officers and civilians without jeopardizing public safety.

blog post

The Environmental Benefits of the Water Storage Investment Program

By Gokce Sencan, Jeffrey Mount

The Water Storage Investment Program is the first attempt use public funds to incentivize new water storage for the environment. While the program has faced some challenges, it could prove to be a useful model for future efforts—with some improvements.

Report

How Hospital Discharge Data Can Inform State Homelessness Policy

By Shannon McConville, Hemal Kanzaria, Renee Hsia, Maria Raven

Discharge data from emergency departments provide information on where people experiencing homelessness go for hospital care and on the conditions for which they are treated. If linked with data from homeless assistance programs and safety net services, this information can help policymakers make targeted investments and evaluate outcomes.

blog post

Commentary: Newsom’s Water Strategy Needs to Go a Step Further

By Sarah Null, Jeffrey Mount

Dams are essential to managing California’s water supply, but their construction and operation has harmed freshwater ecosystems. We propose a novel approach to water management that treats the environment as a priority rather than a constraint on reservoir operations—and that may help to manage growing threats to the health of our rivers and estuaries.

Report

Storing Water for the Environment

By Sarah Null, Jeffrey Mount, Brian Gray, Kristen Dybala ...

Large reservoirs are essential for managing water in California’s highly variable climate—but over the years, the construction and operation of these reservoirs have had significant environmental costs. Our new research outlines how reservoir operations could be changed to improve the health of the state’s fragile freshwater ecosystems.

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.

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.

Report

Police Use of Force and Misconduct in California

By Deepak Premkumar, Alexandria Gumbs, Shannon McConville, Renee Hsia

Nearly 200 Californians die each year in police encounters. Amid growing concern over civilian deaths and racial injustice, we examine what the existing data can—and cannot—tell us about police use of force and misconduct. We also offer recommendations for strengthening the state’s ongoing efforts to improve police transparency and accountability.

Report

Groundwater and Urban Growth in the San Joaquin Valley

By Andrew Ayres, Ellen Hanak, Henry McCann, David Mitchell ...

As the San Joaquin Valley addresses groundwater overdraft under the Sustainable Groundwater Management Act (SGMA), its urban utilities face unique challenges. Learn how to ensure a smooth transition for the region’s residents.

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