A collection of top water news from around California and the West compiled each weekday. Send any comments or article submissions to Foundation News & Publications Director Vik Jolly.
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The headlines below are the original headlines used in the publication cited at the time they are posted here and do not reflect the stance of the Water Education Foundation, an impartial nonprofit that remains neutral.
The Bureau of Reclamation is awarding a major construction
contract for Phase 2 of the B.F. Sisk Safety of Dams
Modification Project. The $255 million award to NW Construction
marks a significant milestone in the continued effort to
improve public safety and water supply reliability in
California. … B.F. Sisk Dam was originally constructed
in 1967 and is a key feature of the Central Valley
Project and State Water Project. The
dam, located on the west side of the San Joaquin Valley,
impounds San Luis Reservoir, the largest offstream reservoir in
the nation, and plays a critical role in delivering water for
prime farmland, California communities, and wildlife
refuges. … The dam safety project, Reclamation’s largest
under the 1978 Safety of Dams Act, will construct stability
berms and shear keys, and raise the crest of the existing
3.5-mile-long earthen dam.
President Donald Trump has taken millions of dollars already
allocated to blue states—and reallocated the funding to red
states—impacting a wide array of ongoing critical
infrastructure projects, including the Pajaro River Flood
Management Project. … Also losing funding are the
American River Common Features Levee Improvement Project, the
Lower San Joaquin River Project and the West Sacramento
Project. Pajaro River Flood Management Agency (PRFMA) Director
Mark Strudley said that construction is still expected to start
this fall on Reach 6, which runs along Corralitos Creek from
Green Valley Road to East Lake Avenue. That portion of the
project is funded by $156 million already allocated to the
project. … PRFMA was also counting on—and what Trump zeroed
out—was $38.5 million in funding for the Pajaro River Levee
project provided by Congress to the Army Corps under
Republicans’ yearlong continuing resolution for fiscal year
2025.
Launching the PPIC Water Policy Center ten years ago was a
risk. How was a small team going to have a big impact on such
intractable problems? After a decade, the proof is in the
pudding. We’ve done it by being interdisciplinary, seeking out
facts amid controversy, and really trying to understand the
challenges and opportunities in each water sector. Despite the
many difficulties and complexities of California’s water, the
state has made tremendous progress on water management in the
last decade, and the Water Policy Center has worked hard to
support that progress with forward-looking, nonpartisan
research. We follow where the facts lead, and that commitment
to the facts—even if the results are not popular—has made us a
trusted voice on some of the thorniest challenges in the field.
Since the center launched ten years ago, we’ve released a wide
range of impactful research. Here are just four major areas of
research we’ve conducted on issues that matter deeply to all
Californians.
Coronado’s shoreline closed over Memorial Day weekend as
wastewater from the ongoing Tijuana sewage crisis pushed
bacteria into coastal waters. … Agencies in both the US
and Mexico are working to repair the failing infrastructure
that causes the ongoing pollution. Mexico is currently in the
second phase of repairing its International Collector, which
carries Tijuana’s wastewater to treatment plants and is prone
to leaks. It is unclear if the weekend’s closures were related
to the project, although the US International Boundary and
Water Commission said ahead of the project that excess sewage
flow might arise from the project. During the project’s
first phase, Mexico diverted excess sewage into the Tijuana
River, which ultimately caused beach closures in Coronado.
… In the US, the IBWC is working to repair its own
infrastructure, the most notable of which is the South Bay
International Wastewater Treatment Plant.
Local farmers are fighting against a plan to sharply reduce
their special water rate discount, contending it could wipe out
much of the county’s already-shrinking agriculture industry.
The cash-strapped County Water Authority says it must roll back
the longtime rate discount it now gives to roughly 1,000 local
farmers because of dropping demand and changes to the
authority’s business model. Farmers say the rate hike proposal
is shortsighted because it would accelerate the demise of many
farms, stripping the water authority of existing customers at a
time when it needs more customers — not less. Losing hundreds
of local farms would also hurt ordinary San Diegans, the
farmers say, by replacing local fruits and vegetables with
imported produce that would be more expensive and less fresh.
… While the discount varies from local water agency to
water agency, it is typically in the neighborhood of 25%.
A Placer County man is going to jail after the California
Department of Fish and Wildlife busted an illegal fish selling
operation. According to the CDFW, their Delta Bay Enhanced
Enforcement Program and Special Operations Unit investigated a
conspiracy to sell Pacific lamprey, leading to the arrest of
Justin D. Lewis. Lewis sourced Pacific lamprey, a California
state species of special concern, from the Klamath River in Del
Norte County and resold the fish to sellers across Colusa
County and beyond. The CDFW said lamprey are often used as bait
for sturgeon and other fish, but also are valued highly by the
Yurok tribe in Del Norte County as a food source and cultural
emblem. Lewis was sentenced on May 21 to two years — one
in the Colusa County Jail, and another on supervised release.
He also must pay more than $20,000 in fines and his fishing
privileges are suspended.
California’s second-largest reservoir (Lake
Oroville) reached full capacity for the third
year in a row Thursday, the first time it’s hit such a
record in its 57-year history. … Its latest
milestone comes as warming temperatures and snowmelt runoff
made its way into the Feather River watershed. … Water levels
are at 121% of the reservoir’s historical average for this time
of year, which is a similar trend among nearly all if the
state’s major reservoirs. With the exception of the San Luis
Reservoir, which is sitting at 94% of its historical capacity,
every major reservoir is above its average. The past wet
winter in California has bolstered snowpack accumulation and
cut detrimental drought conditions that have been persistent in
previous years.
To those who know about it, the San Joaquin River is Fresno’s
greatest natural feature. … Yet, those passionate about
the river told The Fresno Bee that too many people — even
Fresnans — still don’t know about it. And they have different
ideas about how to capture the possibilities. Some want more
entrepreneurial development at the water’s edge — like a new,
commercialized river walk — though others vehemently oppose
that kind of development, and it doesn’t square with long-term
goals set out in a conservation-focused master plan. Others
argue it’s the city of Fresno that holds the keys to unlocking
the river’s potential for economic development, and that
leadership over the years has failed to advance innovative
ideas. … Critics of the river’s management say that it
has too few public access points and too few easy ways for the
general public to use it for recreation. The natural resource
is administered by a conservancy that has set out a long-term
plan that does not emphasize economic development or tourism
marketing.
As the Colorado River’s giant reservoirs have declined during
the last two decades, even larger amounts of water have been
pumped and drained from underground, according to new research
based on data from NASA satellites. Scientists at Arizona State
University examined more than two decades of satellite
measurements and found that since 2003 the quantity of
groundwater depleted in the Colorado River Basin is comparable
to the total capacity of Lake Mead, the nation’s largest
reservoir. The researchers estimated that pumping from wells
has drained about 34 cubic kilometers, or 28 million acre-feet,
of groundwater in the watershed since 2003 — more than twice
the amount of water that has been depleted from the river’s
reservoirs during that time.
Water began flowing from a pipe onto hundreds of acres of dry,
sunbaked lake bed as California officials filled a complex of
shallow ponds near the south shore of the Salton Sea in an
effort to create wetlands that will provide habitat for fish
and birds, and help control lung-damaging dust around the
shrinking lake. The project represents the state’s largest
effort to date to address the environmental problems plaguing
the Salton Sea, which has been steadily retreating and leaving
growing stretches of dusty lake bottom exposed to the desert
winds. … The habitat area in Imperial County is being
filled with water after an adjacent area called East Pond
received its first water in April. In the coming weeks, state
officials said the flooding of these sections will bring to
fruition the first 2,000 acres of the Species Conservation
Habitat Project, a central effort in California’s plan for
improving conditions at the state’s largest lake.
California’s second-largest reservoir, Lake
Oroville, reached capacity Friday, hitting the high
water mark for the third straight year — a first for the
57-year-old reservoir. The milestone comes after a moderately
wet winter in California, with enough snow in the mountains,
particularly in the north, to melt and flush substantial water
into state reservoirs. This week, water storage in California’s
major reservoirs stood at a comfortable 116% of average for the
time of year, ensuring decent supplies for the rest of
2025. At Lake Oroville, about 70 miles north of Sacramento
in Butte County, water levels rose Friday morning to within
inches of the 900-foot elevation mark that state water managers
deem full pool, prompting notice that the reservoir had hit
capacity. At capacity, the lake holds 3.4 million acre-feet of
water, enough to supply more than 7 million households for a
year.
Recent cuts to the National Oceanic and Atmospheric
Administration (NOAA) have conservationists and scientists
worried about anadromous fish populations in the Pacific
Northwest. Like other federal agencies, NOAA is undergoing
major downsizing. The shrinkage is already disrupting habitat
restoration work for salmon and steelhead in California. And if
additional budget cuts that are currently in the works come to
fruition, the agency’s fisheries division could be eliminated
entirely, a recently retired NOAA scientist tells Field &
Stream. … When it comes to salmon and steelhead,
(fluvial geomorphologist Brian) Cluer worries most about
the potential loss of dam-removal projects in the Pacific
Northwest. NOAA played a pivotal role in the removal of four
dams on California’s Klamath River in 2023 and 2024, Cluer
says.
… To the eye, Imperial Beach, Calif., is an idyllic beach
town, a playground for tourists and Southern California
residents alike at the southern border with Mexico. But lately,
the view has been ruined by the sea breeze, which reeks of
rotten eggs. The surfers who once prepared for big-wave
competitions are gone. So are the tourists who built intricate
sand castles and licked ice cream cones on the pier. Imperial
Beach is now the center of one of the nation’s worst
environmental disasters: Every day, 50 million gallons of
untreated sewage, industrial chemicals and trash flow from
Tijuana, Mexico, into southern San Diego County. The
cross-national problem traces back at least a century. But it
has significantly worsened in recent years as the population of
Tijuana has exploded and sewage treatment plants in both
countries have fallen into disrepair.
The Kings Subbasin is not hitting the brakes after a
near-average Water Year 2024. Building on the momentum of the
historic 2023 water year, Kings Subbasin groundwater agencies
remain committed to driving long-term sustainability under the
Sustainable Groundwater Management Act (SGMA)
through local action and coordination. According to the most
recent Annual Report, Water Year 2024 (October 1, 2023 to
September 30, 2024) brought slightly above-average surface
water diversions, reaching approximately 108% of the Kings
River’s long-term average. Though not as abundant as the year
before, 2024 was classified as a near-average year in terms of
water availability. This marked a return to more typical
conditions after 2023’s wet year.
NASA’s U.S.-French Surface Water and Ocean
Topography (SWOT) satellite, which was launched in 2022
from Vandenberg Space Force Base, has spotted large-scale river
waves for the first time, the NASA Jet Propulsion Laboratory
(JPL) in Southern California has announced. The river waves,
which, unlike ocean waves, are temporary surges of water,
stretched from 47 to 166 miles long as they traveled down
rivers in Montana, Texas, and Georgia, the SWOT satellite
recorded. The three large waves measured by the SWOT
satellite from 2023 to 2024 were believed to be caused by
extreme rainfall and a loosened ice jam, NASA reports.
… On Jan. 25, 2024, on the Colorado
River south of Austin, Texas, a river wave over
30-feet-tall and and 166 miles long traveled around 3.5 feet
per second for over 250 miles before discharging into Matagorda
Bay, and was associated with the largest flood of the year on
that section of river, according to NASA.
The Wildlife Conservation Board (WCB) has approved $59.5
million in grants to support 25 habitat protection and
restoration projects in 21 counties across California. Awarded
at WCB’s May 22 meeting, the projects will safeguard nearly
23,000 acres of the state’s most ecologically important
landscapes. Among the awards is a $14.75 million grant to
the Trust for Public Land(opens in new tab) (TPL) to acquire
approximately 6,475 acres near the city of Ventura. Known as
Rancho Cañada Larga, the land features coastal sage scrub,
native grasslands, oak woodlands, chaparral and riparian
habitats that support at least 20 special-status wildlife
species and eight rare plant species. The site provides
critical habitat for the California red-legged frog and
Southern California steelhead, and lies within the year-round
range of the California condor.
President Donald Trump’s California-related water policy hasn’t
always been thoughtfully executed, as the fracas over his
ordered water releases early this year to help with the Los
Angeles wildfires made clear. The decision was hastily made,
didn’t help firefighting efforts and squandered water that
Central Valley farms will need as the dry season takes hold.
Nevertheless, the president’s instincts are correct. California
faces repeated droughts, with state water policy prioritizing
environmental concerns over the needs of farmers and consumers.
This approach hasn’t done much to improve the environment or
boost fish populations. So Trump is right to shift priorities
on federally managed projects. The latest news is heartening,
as it points toward building a project that has been discussed
for decades: raising Shasta Dam by 18.5 feet.
There is now another option for boaters hoping to get out on
Folsom Lake amid golden mussel restrictions.
Boats can now undergo a hot water decontamination — skipping
the 30-day quarantine that was previously the only
option. The rules are aimed at preventing an infestation
of golden mussels, which were recently identified in the
Sacramento-San Joaquin Delta and that “pose a significant
threat to the ecological health of all waters of the state, its
water conveyance systems, infrastructure, and water quality,”
California State Parks said. California State Parks lists
one location that is authorized to conduct decontaminations and
place a green seal on vessels headed for Folsom Lake – Mello
Marine. … It’s a service that requires a lot of water
and Mello’s setup was designed with that in mind – using pond
liners, trenches, filters and holding tanks.
The Orange County Water District (OCWD; the District) and the
City of Tustin celebrated the dedication of a new PFAS
treatment plant, marking a major milestone in ensuring safe and
reliable water for Tustin residents and businesses.
The dedication ceremony brought together local, state and
federal representatives to recognize the proactive actions of
both OCWD and the City of Tustin in addressing PFAS, a group of
manufactured chemicals increasingly found in water sources
across the country, including the Orange County Groundwater
Basin. The new treatment system, implemented at the existing
Main Street Water Treatment Plant, uses ion exchange technology
to treat up to 6,400 gallons of groundwater per minute. The
centralized plant is fed by four offsite wells connected
through approximately 2.5 miles of conveyance pipeline.
Nicole Byrne watched anxiously from across the small kitchen in
her home as Parham Azimi, a Harvard University researcher,
lined up sample bottles next to the running tap. … Azimi was
there gathering water samples as part of an unprecedented
academic collaboration led by health, environmental, data and
wildfire risk assessment researchers at Harvard’s T.H. Chan
School of Public Health, the UCLA Fielding School of Public
Health, the University of California, Davis and the University
of Texas at Austin. With support from the Spiegel Family Fund,
the universities formed the LA Fire Health Study Consortium in
late January after the fires killed 29 people, destroyed more
than 16,000 structures, primarily in Altadena and Pacific
Palisades, and exposed millions to particulate matter, gases,
chemicals, heavy metals, asbestos, PFAS, microplastics and
other toxic pollutants.
