Science seen from different perspectives
by Jay Lund The awe-inspiring Phil Isenberg used to talk about differences in culture between science and policy as being akin to the two cultures of scholarship discussed by C.P. Snow – science and...
View ArticleRetirement – an optimal stopping problem
by Jay Lund By age 66, one realizes that, empirically, the great ride of life and a career will likely end within a few decades. One recounts the longevity (or not) of one’s relatives. Major...
View ArticleHappy New Water Year 2024! – from 2023’s wild ride to the wilderness of 2024
by Jay Lund October 1 marked the beginning of the new Water Year in California. Water years here run from October 1 until September 30 of the next calendar year, and are named for the calendar year of...
View ArticlePortfolio Solutions for Water – Flood Management
by Jay Lund *this is a repost of a blog originally published in March 2019. The tweet below, shows slight (but still frightening) levee overtopping this week on Cache Creek, just north of Woodland,...
View ArticleLiving with Extreme Floods in California
by Peter Moyle, Jay Lund, Andrew L. Rypel, Carson Jeffres and Nicholas Pinter Floods and their consequences are a reality for many worldwide, including those living in California. This reality is...
View ArticleWhiplash Again! – Learning from Wet (and Dry) Years
by Jay Lund, Deirdre Des Jardins, Kathy Schaefer “Old superlatives have been dusted off and new ones count to better describe the tragedy, damage, and trauma associated with the State’s latest...
View ArticleTulare Basin and Lake – 2023 and their future
by Jay Lund “The fact that our rivers have been relatively quiet during the last 40 years probably doesn’t mean anything; it’s just a statistical coincidence …. The problem is more psychological. We...
View ArticleThe Banality of Floods (and Droughts)
By Jay Lund California’s ongoing floods and very wet year overall will continue to grab headlines, provide great pictures, and break some local records, but overall this year is unlikely to be truly...
View ArticleExplaining water units to real people (who like basketball)
by Jay Lund It’s March madness once again as we try to explain water conditions in California to real people in the midst of additional basketball madness. We all enjoy and suffer with basketball....
View ArticleA Guide for New California Water Wonks
by Jay Lund Water is a universal foundation for every problem and opportunity in California. Most people use it every day, yet even experts with decades of experience don’t know it all. (Alas, too...
View ArticleHow to give a profoundly boring technical talk
by Jay Lund 1. The title should be packed with obscure acronyms that give no clue of the subject. An exciting talk might disturb the audience’s ability to relax, look at their phones, or quietly work...
View ArticleOctober is Over – What it means for this water year and some other musings
by Jay R. Lund October 2024, the first month of the 2025 Water Year, has been dry, the 16th driest October in 103 years of Northern California precipitation records. And the forecast for the next 10...
View ArticleHappy New Water Year 2025! – Wet, dry, or just plain weird?
by Jay Lund and Alvar Escriva-Bou October 1 marks the beginning of the new Water Year in California. Water years here run from October 1 until September 30 of the next calendar year, and are named for...
View ArticleSpinning Salmon in the Classroom
by Abigail Ward and Peggy Harte Salmon face many stressors that significantly reduce their survival. Persistent challenges include habitat degradation, predation, pollution, and climate change that...
View ArticleCalifornia’s March Water Madness
by Jay Lund March is usually the last month in California’s mostly unpredictable wet season. A dry March can make a promising water year disappointing. A very wet March can make a potentially...
View ArticleA Functional Flows approach for Environmental Flows in Chile
by Sarah Yarnell, Diego Rivera Salazar, Camila Boettiger, and Jay Lund Countries, regions, and river basins globally are struggling to provide and manage flows in rivers for ecosystems. One approach,...
View ArticleGreen Sturgeon aren’t Salmon: Updated life cycle models for management
by Erin E Tracy, Jon A. Walter, Karrigan Bork, Anna Steel, Francisco J Bellido-Leiva, Scott Colborne, Sarah Yarnell Over 65 million years ago, as Tyrannosaurus rex roamed the great plains, green...
View ArticleEven when most of California is dry doesn’t mean we can’t have floods
by Jay Lund Every water year is different in California, and in any water year, local and regional experiences often differ. California is a large state, far larger than most storm systems and...
View ArticleHow’s California’s water year developing? – January 2024
by Jay Lund The first few months of California’s water year, which started in October 2023, have been pretty dry. We never know what to expect of California’s wet season until it ends, usually in late...
View ArticleA Functional Flows approach to implementing Flood-MAR
by Bronwen Stanford, Julie Zimmerman, Kris Taniguchi-Quan, Ted Grantham, Sarah Yarnell, Alyssa Obester, Eric Stein, Jessi Ayers, Alex Milward As recent droughts have highlighted, groundwater overuse is...
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