Jay Lund
@jrlund.bsky.social
UC Davis professor emeritus of Civil and Environmental Engineering, Geography, and other things. Water, water, and sailing. https://faculty.engineering.ucdavis.edu/lund/
Democracy, public education, and science benefits believers and non-believers alike.
Democracy, public education, and science benefits believers and non-believers alike.
A new National Academies report is out - Review of the Long-Term Operations of the Central Valley Project and the State Water Project nap.nationalacademies.org/catalog/2913...
Review of the Long-Term Operations of the Central Valley Project and the State Water Project
Read online, download a free PDF, or order a copy in print.
nap.nationalacademies.org
November 10, 2025 at 5:45 PM
A new National Academies report is out - Review of the Long-Term Operations of the Central Valley Project and the State Water Project nap.nationalacademies.org/catalog/2913...
Faculty meeting?
California water meeting?
Recent meeting of Congress?
California water meeting?
Recent meeting of Congress?
As a retired academic I’m allowed to say that this public art in Leuven sums up how I feel about the prospect of a committee meeting!
November 8, 2025 at 3:53 PM
Faculty meeting?
California water meeting?
Recent meeting of Congress?
California water meeting?
Recent meeting of Congress?
Faculty meeting
As a retired academic I’m allowed to say that this public art in Leuven sums up how I feel about the prospect of a committee meeting!
November 8, 2025 at 3:42 PM
Faculty meeting
Reposted by Jay Lund
Saw some incredibly effective climate change messaging today @sammyroth.bsky.social
Kingston, NY waterfront
TIL that the Hudson River is tidal from the Atlantic Ocean to Albany. Storm surge threatens more than coastal areas
Kingston, NY waterfront
TIL that the Hudson River is tidal from the Atlantic Ocean to Albany. Storm surge threatens more than coastal areas
October 25, 2025 at 12:28 AM
Saw some incredibly effective climate change messaging today @sammyroth.bsky.social
Kingston, NY waterfront
TIL that the Hudson River is tidal from the Atlantic Ocean to Albany. Storm surge threatens more than coastal areas
Kingston, NY waterfront
TIL that the Hudson River is tidal from the Atlantic Ocean to Albany. Storm surge threatens more than coastal areas
Reposted by Jay Lund
that democratic dignity which, on all hands, radiates without end from God
October 25, 2025 at 4:47 PM
that democratic dignity which, on all hands, radiates without end from God
Foucault observed that a lot of life is about trying to repress the little fascist in each one of us. When people start describing politics as a fight, they are unleashing their inner fascist. Fighting is for fascists.
www.nytimes.com/2025/10/23/o...
www.nytimes.com/2025/10/23/o...
Opinion | The Rot Creeping Into Our Minds
www.nytimes.com
October 24, 2025 at 12:22 AM
Foucault observed that a lot of life is about trying to repress the little fascist in each one of us. When people start describing politics as a fight, they are unleashing their inner fascist. Fighting is for fascists.
www.nytimes.com/2025/10/23/o...
www.nytimes.com/2025/10/23/o...
A story of true (not rhetorical) resilience and robustness for part of a native ecosystem. "There will always be an ecosystem," as Dr. Moyle sometimes says. This story has some lessons for us.
californiawaterblog.com/2025/10/19/r...
californiawaterblog.com/2025/10/19/r...
Resilient California Fishes: Sacramento Sucker
By Peter Moyle and Tom Taylor ____________________ The fresh waters of California support a diverse native fish fauna, 130 taxa by our count (Leidy and Moyle 2021). At least 56 of these taxa are on…
californiawaterblog.com
October 20, 2025 at 6:08 PM
A story of true (not rhetorical) resilience and robustness for part of a native ecosystem. "There will always be an ecosystem," as Dr. Moyle sometimes says. This story has some lessons for us.
californiawaterblog.com/2025/10/19/r...
californiawaterblog.com/2025/10/19/r...
Teacher unclear on the concept.
I love how this comedy sketch starts out being about real teacher concerns and then morphs into something very different. youtu.be/8AeCo3AD1cM?...
Confused Teacher Crashes Out Over His Job | Mitchell and Webb Are Not Helping | Channel 4 Comedy
YouTube video by Channel 4 Comedy
youtu.be
October 18, 2025 at 1:19 PM
Teacher unclear on the concept.
Two-Decade Hydropower Plunge at Big Colorado River Dams www.circleofblue.org/2025/infogra...
Two-Decade Hydropower Plunge at Big Colorado River Dams
Lakes Mead and Powell, the largest reservoirs on the Colorado River, do not just store water. Their dams, Hoover and Glen Canyon, also generate electricity. This hydropower drives irrigation pumps and...
www.circleofblue.org
October 16, 2025 at 1:02 PM
Two-Decade Hydropower Plunge at Big Colorado River Dams www.circleofblue.org/2025/infogra...
Reposted by Jay Lund
Yolo Bypass tour during #ISRS2025 Carson Jeffres of @ucdavis.bsky.social & Jacob Katz of @caltrout.bsky.social explain how field behind them is great habitat for juvenile chinook…just add water & turbocharged food web produces “floodplain fatties” as in poster @riversociety.bsky.social #WaterYear
October 14, 2025 at 8:42 PM
Yolo Bypass tour during #ISRS2025 Carson Jeffres of @ucdavis.bsky.social & Jacob Katz of @caltrout.bsky.social explain how field behind them is great habitat for juvenile chinook…just add water & turbocharged food web produces “floodplain fatties” as in poster @riversociety.bsky.social #WaterYear
Reposted by Jay Lund
Grid scale batteries are changing our electricity system. Excellent new visual story on batteries in FT today shows just how far this technology has evolved.
Fasten your seatbelts, this is just the beginning.
ig.ft.com/mega-batteri...
Fasten your seatbelts, this is just the beginning.
ig.ft.com/mega-batteri...
October 13, 2025 at 10:26 AM
Grid scale batteries are changing our electricity system. Excellent new visual story on batteries in FT today shows just how far this technology has evolved.
Fasten your seatbelts, this is just the beginning.
ig.ft.com/mega-batteri...
Fasten your seatbelts, this is just the beginning.
ig.ft.com/mega-batteri...
Environmental Flows: Its not just the water - its the variability!
californiawaterblog.com/2025/10/12/r...
californiawaterblog.com/2025/10/12/r...
Representing interannual variability for environmental flow operations: the functional flow regime
By Lindsay Murdoch, Sarah Yarnell, and Jay Lund California’s local communities and native ecosystems alike have adapted to cycles of flood, drought, and a healthy portion of everything in between. …
californiawaterblog.com
October 12, 2025 at 5:32 PM
Environmental Flows: Its not just the water - its the variability!
californiawaterblog.com/2025/10/12/r...
californiawaterblog.com/2025/10/12/r...
Happy New Water Year 2026! May your water year be as wet as you like when you'd like it.
californiawaterblog.com/2025/09/28/h...
californiawaterblog.com/2025/09/28/h...
Happy New Water Year 2026! – following 2025’s Normal and Extreme Hydrology
By Jay Lund October 1 marks the beginning of California’s new Water Year (WY). Water years here run from October 1 until September 30 of the next calendar year and are named for the calendar year o…
californiawaterblog.com
September 28, 2025 at 7:55 PM
Happy New Water Year 2026! May your water year be as wet as you like when you'd like it.
californiawaterblog.com/2025/09/28/h...
californiawaterblog.com/2025/09/28/h...
Making Florida More Flood Resistant Is Forcing Hard Choices for Homeowners www.nytimes.com/2025/09/27/u...
Making Florida More Flood Resistant Is Forcing Hard Choices for Homeowners
www.nytimes.com
September 27, 2025 at 2:02 PM
Making Florida More Flood Resistant Is Forcing Hard Choices for Homeowners www.nytimes.com/2025/09/27/u...
Reposted by Jay Lund
Results so stunningly clear they inspired this classic xkcd (xkcd.com/2400/):
September 1, 2025 at 7:32 PM
Results so stunningly clear they inspired this classic xkcd (xkcd.com/2400/):
A profound and inspiring post.
Being the Lorax
By Andrew L. Rypel “Way back in the days when the grass was still green and the pond was still wet and the clouds were still clean, and the song of the Swomee-Swans rang out in space...one morning, I came to this glorious place. And I first saw the trees! The Truffula Trees! The…
By Andrew L. Rypel “Way back in the days when the grass was still green and the pond was still wet and the clouds were still clean, and the song of the Swomee-Swans rang out in space...one morning, I came to this glorious place. And I first saw the trees! The Truffula Trees! The…
Being the Lorax
By Andrew L. Rypel “Way back in the days when the grass was still green and the pond was still wet and the clouds were still clean, and the song of the Swomee-Swans rang out in space...one morning, I came to this glorious place. And I first saw the trees! The Truffula Trees! The bright-colored tufts of the Truffula Trees! Mile after mile in the fresh morning breeze.” …
californiawaterblog.com
August 31, 2025 at 2:58 PM
A profound and inspiring post.
There is a common sentiment that California should have more surface reservoir capacity. But few seem willing to pay enough for such capacity, even with healthy (or unhealthy) state subsidies.
Plans for the largest new Bay Area reservoir since 1998 collapse amid cost overruns, delays www.mercurynews.com/2025/08/26/p...
Plans for the largest new Bay Area reservoir since 1998 collapse amid cost overruns, delays
Santa Clara Valley Water District halts work on $3.2 billion Pacheco Reservoir after already spending $100 million
www.mercurynews.com
August 27, 2025 at 9:46 PM
There is a common sentiment that California should have more surface reservoir capacity. But few seem willing to pay enough for such capacity, even with healthy (or unhealthy) state subsidies.
Excellent on gerrymandering.
I'm pleased to introduce a full set of Congressional *and* legislative report cards, courtesy of the Princeton Gerrymandering Project. An enormous amount of work, the culmination of several years of development. Check it out!
samwang.substack.com/p/redistrict...
samwang.substack.com/p/redistrict...
Redistricting plans in 50 states, graded (correctly)
...but first, we have to kill the proportionality myth.
samwang.substack.com
August 26, 2025 at 1:10 PM
Excellent on gerrymandering.
Putting AI energy use in perspective. If you want to reduce energy use and greenhouse gas emissions, ride a bike to work.
www.washingtonpost.com/climate-envi...
www.washingtonpost.com/climate-envi...
Column | ChatGPT is an energy guzzler. These things you’re doing are worse.
AI services have earned a reputation as energy-hungry beasts. But what about the other emissions in our digital lives?
www.washingtonpost.com
August 26, 2025 at 12:57 PM
Putting AI energy use in perspective. If you want to reduce energy use and greenhouse gas emissions, ride a bike to work.
www.washingtonpost.com/climate-envi...
www.washingtonpost.com/climate-envi...
The cohesive sediment transport lectures of Professor Ray Krone (1991), including how SF Bay marshes work are now available on YouTube. Prepare to get deep in the mud. www.youtube.com/playlist?lis...
Cohesive Sediment Transport and Behavior, graduate course lectures by Professor Ray B. Krone, 1991 - YouTube
UC Davis Professor Ray Krone was a founder of the field of cohesive sediment transport in the 1960s, related to sedimentation, erosion, and management of mud...
www.youtube.com
August 25, 2025 at 10:24 PM
The cohesive sediment transport lectures of Professor Ray Krone (1991), including how SF Bay marshes work are now available on YouTube. Prepare to get deep in the mud. www.youtube.com/playlist?lis...
Physics will force more painful cuts eventually unless the parties make very substantial cuts in advance.
…or the UB could collaborate with the LB on a plan where they share some cuts in the driest times and don’t face compact compliance threats?
watereducationcolorado.org/fresh-water-...
watereducationcolorado.org/fresh-water-...
Is Colorado ready for forced Colorado River cuts? State official says it might be time for a plan. - Water Education Colorado
STEAMBOAT SPRINGS — Colorado water officials announced Wednesday a rough plan to figure out how the state would handle an unwelcome specter in the Colorado River Basin: forced water cuts. Mandatory wa...
watereducationcolorado.org
August 24, 2025 at 2:20 AM
Physics will force more painful cuts eventually unless the parties make very substantial cuts in advance.
A common irony of urban water conservation. One which can usually be overcome with better rate structures - which requires care in California due to prop 218.
Santa Cruz faced down drought by cutting water use by almost 2/3rds in two decades. But maintaining its water system is paid for by consumption charges and infrastructure costs did not decrease. Felicity Barringer reports for Stanford's Bill Lane Center for the American West #cawater #westwater
Santa Cruz water utility grapples with a paradox: what to do when conservation becomes bad for business #cawater andthewest.stanford.edu/2025/santa-c...
August 22, 2025 at 7:17 PM
A common irony of urban water conservation. One which can usually be overcome with better rate structures - which requires care in California due to prop 218.
Reposted by Jay Lund
Sacrificing independent redistricting in California seems like a threat to democracy, California, and the Democratic Party than keeping politicians away from redistricting and not following Texas Republicans fostering corrupt elections.
August 16, 2025 at 6:08 AM
Sacrificing independent redistricting in California seems like a threat to democracy, California, and the Democratic Party than keeping politicians away from redistricting and not following Texas Republicans fostering corrupt elections.
Reposted by Jay Lund
Where are they now: Anna Sturrock
Registration is now open for the 7th International Symposium on River Science, held in Davis, California from Oct 6-9, 2025! Early Bird Registration will remain open until 15 August 2025. “Where are they now:” is a new blog series on the California WaterBlog,…
Registration is now open for the 7th International Symposium on River Science, held in Davis, California from Oct 6-9, 2025! Early Bird Registration will remain open until 15 August 2025. “Where are they now:” is a new blog series on the California WaterBlog,…
Where are they now: Anna Sturrock
Registration is now open for the 7th International Symposium on River Science, held in Davis, California from Oct 6-9, 2025! Early Bird Registration will remain open until 15 August 2025. “Where are they now:” is a new blog series on the California WaterBlog, written in the voices of our alumni. The series will celebrate the many alumni who got their start at the Center for Watershed Sciences (CWS) and have now gone on to bigger and better things.
californiawaterblog.com
August 3, 2025 at 11:00 AM
Where are they now: Anna Sturrock
Registration is now open for the 7th International Symposium on River Science, held in Davis, California from Oct 6-9, 2025! Early Bird Registration will remain open until 15 August 2025. “Where are they now:” is a new blog series on the California WaterBlog,…
Registration is now open for the 7th International Symposium on River Science, held in Davis, California from Oct 6-9, 2025! Early Bird Registration will remain open until 15 August 2025. “Where are they now:” is a new blog series on the California WaterBlog,…