California WaterBlog

by Jay Lund and Peter Moyle All parties in the Delta have an interest in a healthy ecosystem and in healthy water exports.  Without a healthy ecosystem, endangered species requirements increasingly intrude on water exports and Delta landowners.  Without healthy … Continue reading →

by Erik Porse Los Angeles is a grand American urban experiment. It brings emerging ideas into the mainstream, sometimes for better, and sometimes for worse. In the early 20th Century, it seemed fanciful to build a metropolis in a region … Continue reading →

by James Hobbs and Peter Moyle The results of 2017 surveys of Delta fishes are coming in. Already, the results are clear:  it was an unhappy year for Delta smelt. The wet year with high outflows should have created an … Continue reading →

by Anna Sturrock and Corey Phillis Many Californians have seen headlines about endangered Sacramento River Winter Run Chinook salmon (“winter run”) on the “brink of extinction.” But not many people know exactly what winter run are, nor why they are … Continue reading →

by Jay Lund Every year is different for water management in California. The 2012-2016 water years were among the driest and warmest on record.  2017 was the wettest year of record for much of California, with thousands of water managers … Continue reading →

by Jay Lund This year’s Nobel Prize in Economics went to Richard Thaler, who pioneered “nudging” to help people volunteer to make more personally and socially beneficial decisions.  As an example, having employees automatically enrolled for retirement contributions and then … Continue reading →

by Alison Whipple The specter of California drought looming again on the horizon gives renewed urgency for water policy and management reforms. Recent discussions reflect a growing recognition that our future depends on us making water count for both humans … Continue reading →

by Brian Gray, Leon Szeptycki, and Barton “Buzz” Thompson California’s management of water for is not working for anyone. Environmental advocates argue that state and federal regulators have set water quality and flow standards that do not adequately protect fish … Continue reading →

by Gabrielle Boisramé Now that summer is over and rain has returned to California, it appears that the dramatic 2017 fire season is finally behind us. The effects of fire season can linger, however, with the possibilities of erosion and … Continue reading →

by Jay Lund A new option has entered public discussion of Delta water supplies, having only one cross-Delta tunnel instead of two. The official State WaterFix proposal is for two tunnels (totaling 9,000 cfs capacity) under-crossing the Delta for 35 … Continue reading →

by Peter Moyle and Robert Lusardi Removing Shasta Dam is the single best action we can take to save California’s wild salmon.  Not possible, you say? Then there are two alternatives. One is to provide plenty of cold water and … Continue reading →

by Mollie Ogaz   Imagine you are on the bank of a river or stream in California’s Central Valley. It is just past sunset, leaves rustle overhead, and you feel a tingling along your spine. Suddenly a zombie fish leaps … Continue reading →

by Richard Frank This article originally appeared on Water Deeply. You can find the original here. Californians strongly support action by state and federal agencies to ensure that the water in our streams and the water we drink are free … Continue reading →

This year, we have the pleasure of welcoming Dr. Andrew Rypel to UC Davis and the Center for Watershed Sciences to his appointment as the new Peter B. Moyle and California Trout Endowed Chair in Coldwater Fishes. Dr. Rypel shares some of this thoughts about fish, science, … Continue reading →

by Christina Buck, Jim Blanke, Reza Namvar, and Thomas Harter The Sustainable Groundwater Management Act (SGMA) presents many new challenges and opportunities.  One of those challenges is accounting for ‘interbasin flow,’ or subsurface groundwater movement between subbasins, a piece of … Continue reading →

by Jeffrey Mount The UC Davis Center for Watershed Sciences turns 20 years old this month.  I am the first Director of the Center.  The current Director — Jay Lund — asked me to write an  account of the origins … Continue reading →

by Tasha Thompson, Michael Miller, Daniel Prince and Sean O’Rourke Spring Chinook and summer steelhead (premature migrators) have been extirpated or are in decline across most of their range while fall Chinook and winter steelhead populations (mature migrators) remain relatively healthy. … Continue reading →

by Katherine Ransom and Thomas Harter In California’s Central Valley, many communities depend significantly or entirely on groundwater as their drinking water supply. Studies estimate the number of private wells in the Central Valley to be on the order of … Continue reading →

by Peter Moyle, Jeff Opperman, Amber Manfree, Eric Larson, and Joan Florshiem The flooding in Houston is a reminder of the great damages that floods can cause when the defenses of an urban area are overwhelmed.  It is hard to … Continue reading →

by Ann Willis, Rob Lusardi, Alex Hart, Susan Hart, Blair Hart, Andrew Braugh, Amy Campbell, Ada Fowler Rancher: farms. Conservationist: fish. Researcher: science. Too often, identity is used to divide us. Stereotypes are used to stake out conflicting positions. It’s … Continue reading →