Watch our series of short videos on the importance of the
Sacramento-San Joaquin Delta, how it works as a water hub for
California and the challenges it is facing.
When a person opens a spigot to draw a glass of water, he or she
may be tapping a source close to home or hundreds of miles away.
Water gets to taps via a complex web of aqueducts, canals and
groundwater.
Learn more about our team in the office and on the Board of
Directors and how you can support our nonprofit mission by
donating in someone’s honor or memory, or becoming a regular
contributor or supporting specific projects.
Unlike California’s majestic rivers and massive dams and
conveyance systems, groundwater is out of sight and underground,
though no less plentiful. The state’s enormous cache of
underground water is a great natural resource and has contributed
to the state becoming the nation’s top agricultural producer and
leader in high-tech industries.
A new era of groundwater management began in 2014 in California
with the Sustainable Groundwater Management Act. The landmark law
turned 10 in 2024, with many challenges still ahead.
Before the construction of Hoover Dam on the lower Colorado River, as well as a slew of smaller sisters downstream, the stretch downriver served as a biological oasis in the middle of the unrelenting Mojave and Sonoran deserts. The marshes and backwaters along the river’s edge provided sheltered areas for fish to spawn and rear their young, and mesquite and cottonwood-willow forests provided important habitat for numerous species of birds and other animals.
NEARLY SOLD OUT!
Our Central
Valley Tour travels the length of the San Joaquin
Valley where water supply and use have been in the national
headlines, including our first stop at San Luis
Reservoir near Los Banos. The fifth-largest
reservoir in the state has been in the news recently because
plans to raise its dam are moving forward,
which would create 130,000 acre-feet of additional water for
off-stream storage used by both the federal Central Valley
Project and California’s State Water Project.
Construction on a $2 billion levee project that will
effectively protect more than a third of Stocktonians’ homes
from flooding kicked off this week. Local government
officials took part in a groundbreaking ceremony Friday off
March Lane at the Tenmile Slough in Brookside to launch the
Lower San Joaquin River Improvement Project. … The first
phase of the project, slated for completion in late 2026, will
see improvements made to just over a mile of the Tenmile Slough
levee, which sits directly in the backyard of many homes in the
Brookside area of west Stockton, according to a presentation on
the project’s overview. About one mile of the levee will be
upgraded to have a seepage cutoff wall, which is an added layer
of material preventing water seeping through or under the
levee.
In a major twist, the Donald Trump administration is now
reviewing regional appeals to halt PG&E’s plans to
dismantle the Potter Valley Project. … In an April
14 letter, the Bureau of Reclamation responded to an inquiry
from Aaron Sykes, a board member of the Lake Pillsbury
Alliance, which represents the homeowners and stakeholders
fighting to keep Scott Dam, the structure that holds back Lake
Pillsbury. In the letter, which was reviewed by SFGATE, the
federal agency said funding for the project is “undergoing
reviews” to ensure it aligns with an executive order President
Donald Trump signed on his first day in office that directs the
government to explore any “undue burden” on the “use of
domestic energy resources” including, oil, coal and hydropower.
With drought conditions worsening in southern Utah, Gov.
Spencer Cox says he’s working on issuing an emergency
declaration. Despite northern Utah seeing average snow
this year, counties in the south are exceptionally dry. Cox
said he’s currently working with local officials on the
declaration, which could extend to a handful of counties in the
southwestern corner of Utah that have seen a meager snowpack
this winter. … Statewide, the snow water equivalent —
which is basically the amount of water currently in the
snowpack — is at about 78% of normal, according to the Natural
Resources Conservation Service, or NRCS, which tracks the
snowpack at sites around the state. Much of northern Utah is
between that or higher, with Snowbird’s site at 96%, and a site
in Big Cottonwood Canyon at 115%.
For decades, residents of Bakersfield have lived with a river
that’s little more than a channel of dust. The Kern, which
pours from the snowy peaks of the southern Sierra, descends
upon California’s ninth-largest city and, in all but the
wettest of years, runs dry. A sandy, weed-strewn corridor is
left winding unremarkably through the downtown, beside roads,
beneath bridges and behind businesses. … A group of
residents is trying to change that. Cooper and dozens of others
are fighting to bring water back to the Kern River, hoping to
create a lush, parklike centerpiece in a city best known for
the sunbaked oil fields and farms that surround it. It
isn’t an easy go. The river’s waters are already largely
accounted for, some serving the municipal needs of Bakersfield
and nearby communities, but most drawn for agriculture, the
engine of the regional economy.
Operated by the U.S. Army Corps of Engineers, the
Bay Model is a giant hydraulic replica of San Francisco
Bay and the Sacramento-San Joaquin
Delta. It is housed in a converted World II-era
warehouse in Sausalito near San Francisco.
Hundreds of gallons of water are pumped through the
three-dimensional, 1.5-acre model to simulate a tidal ebb
and flow lasting 14 minutes.
As part of the historic Colorado
River Delta, the Salton Sea regularly filled and dried for
thousands of years due to its elevation of 237 feet below
sea level.
The most recent version of the Salton Sea was formed in 1905 when
the Colorado River broke
through a series of dikes and flooded the seabed for two years,
creating California’s largest inland body of water. The
Salton Sea, which is saltier than the Pacific Ocean, includes 130
miles of shoreline and is larger than Lake Tahoe.
Drought—an extended period of
limited or no precipitation—is a fact of life in California and
the West, with water resources following boom-and-bust patterns.
During California’s 2012–2016 drought, much of the state
experienced severe drought conditions: significantly less
precipitation and snowpack, reduced streamflow and higher
temperatures. Those same conditions reappeared early in 2021
prompting Gov. Gavin Newsom in May to declare drought emergencies
in watersheds across 41 counties in California.
