blog post Measuring Groundwater Overdraft in the Sacramento Valley By Spencer Cole, Kyle Greenspan, Andrew Ayres Nov 7, 2023 As the Sacramento Valley works to bring its groundwater basins into balance, we review the valley’s groundwater sustainability plans to understand how they’re estimating overdraft in their basins—and to see just how much overpumping they found.
blog post Seasonal Weather Predictions Are Elusive in California By Sarah Bardeen Oct 16, 2023 California urgently needs to improve its precipitation forecasting: this could help the state better manage its water supply and prepare for disasters, among other things. But that’s not as easy as it sounds, says Dr. Xianan Jiang, a UCLA researcher. We asked him to tell us more.
blog post The Weird Weather of 2023: Better Get Used to It By Jeffrey Mount, Gokce Sencan, Michael Dettinger Sep 27, 2023 Water Year 2023 comes to an end on September 30. For most weather-watchers, this was an unusual year, with very wet conditions following several very dry years—but are the frequency and intensity of these variations increasing as the planet’s temperature rises? And if so, what might be the implications for water management? We take a look.
blog post Video: Managing Water and Farmland Transitions in the San Joaquin Valley By Sarah Bardeen Sep 26, 2023 For the past seven years, the PPIC Water Policy Center has been researching how the San Joaquin Valley can adapt to a future with less water. On September 20, we held a special half-day event that drew together an array of growers, water managers, agency staff, and others to discuss how to best manage the changes ahead. Read our writeup—and watch the videos!
blog post Commentary: Water-use Challenges Affecting Farmers Means Reinventing the San Joaquin Valley By Ellen Hanak, Caitlin Peterson Sep 26, 2023 To ensure the San Joaquin Valley’s future, groundwater overpumping has to end—and some 500,000 acres of farmland will likely need to come out of intensively irrigated production. But unplanned, haphazard fallowing would harm the valley. In our Fresno Bee commentary, we share insights on how to protect the valley’s residents, agriculture, and environment, drawing on over seven years of research.
blog post Heightened Concerns about Heat Waves and Flooding Due to Climate Change By Rachel Lawler Jul 26, 2023 Record-high numbers of Californians are registering strong concerns about heat waves and flooding, while an overwhelming majority believe climate change is contributing to extreme weather events.
blog post Metropolitan Water District: “We’re the Squirrels of the Water System” By Sarah Bardeen May 8, 2023 Deven Upadhyay is the assistant general manager and executive officer for the Metropolitan Water District of Southern California, which provides water to 19 million people. This week on the blog, Upadhyay describes how Met is handling California’s recent precipitation whiplash—and shares some improvements that are in the works.
blog post Video: Making the Most of a Wet Year By Sarah Bardeen May 1, 2023 Last week, we hosted an expert panel to discuss how we’re handling the sudden deluge of precipitation after years of drought. While the rain and snow has helped transform what was a grim water supply situation, it’s clear that we need to do a better job of preparing for floods—and storing some of that excess water for the dry times that will return.
blog post Commentary: Catastrophic Floods and Breached Levees Reveal a Problem California Too Often Neglects By Jeffrey Mount, Brett Sanders Apr 10, 2023 For much of the past decade, Californians have been fixated on drought, and rightly so. But the storms of the past winter, and the snowmelt-fueled deluges we can expect this spring, are a reminder that we should be equally preoccupied with floods.
blog post Reservoirs Are Full, But Let’s Not Celebrate Just Yet By Greg Gartrell Apr 3, 2023 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.
