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.
California lawmakers on Thursday re-introduced the Border Water
Quality Restoration and Protection Act to combat ongoing
pollution from the Tijuana River. … This is not the
first time the bill has surfaced as a piece of bicameral
legislation. It was introduced in 2021 and again in 2024.
However, the reintroduction comes just after officials released
results from the Centers for Disease Control’s survey of how
people near the border felt about the Tijuana River pollution
crisis and its effects on them. … The Border Water
Quality Restoration and Protection Act would establish the EPA
as the lead agency coordinating efforts between federal, state,
tribal and local agencies to deal with pollution. The bill also
would establish an EPA Geographic Program that would implement
a water quality management program within 180 days of the
bill’s passing. The EPA already has 12 Geographic Programs
that protect local ecosystems through water quality
improvement, habitat restoration and environmental
education.
Neutral conditions dominating large parts of the eastern and
central Pacific are likely to persist throughout the rest of
the year and into the upcoming winter, according to a recent
NOAA outlook. In the agency’s most recent update, researchers
noted that much of the Pacific has anomalies between 0.5 °C to
-0.5 °C, meaning neither El Niño nor La Niña is in
control. Once surface temperature anomalies reach at
least -0.5 °C or colder, a La Niña is considered underway,
which has global implications for weather patterns. The agency
said that if the status of the El Niño-Southern Oscillation, or
what is commonly referred to as the ENSO, were to reach the
cool phase later in the year, the changeover would likely not
mean a whole lot of change, because the La Niña would be weak.
… Last winter officially qualified as a La Niña event,
although the signal was weak. Despite the cool signal, the
season ended as the third-warmest winter on record, with an
average temperature of 1.9 °F above the long-term
average.
Tucson is taking significant steps to secure its water supply
amidst ongoing PFAS contamination challenges. The City of
Tucson has received an initial $4.8 million payment from a
national legal settlement aimed at addressing the impacts of
PFAS products used as Aqueous Film Forming Foam (AFFF). In
an effort that began in 2018, Tucson joined a nationwide
lawsuit alongside hundreds of other water departments,
including those from Southern Arizona. This settlement is
expected to bring nearly $30 million to the city over the
coming years. PFAS contamination has forced Tucson to shut down
nearly 40 drinking water production wells and incurred
substantial costs. To combat this, Tucson Water is constructing
advanced water treatment facilities to restore some of the
affected wells. … While challenges remain, the
settlement offers vital funding to manage the contaminated
groundwater supplies effectively.
The Klamath River Dam Removal First Descent youth kayaking trip
will come to an end on Friday in Klamath for the First Descent
Reception. The group will participate in some reflection on
their adventure as well as speak about the importance of global
river justice and its effect. Friday will be the 30th day of
the group’s source-to-sea journey, becoming the first group to
navigate through the recently undammed Klamath River. Friday’s
event is also the beginning of the Free Rivers Symposium, a
four-day event in Klamath with tribal leaders, scientists and
environmental organizations highlighting the ecological and
cultural significance of the restored Klamath River. In the
Free Rivers Symposium, experts will highlight the impacts of
wildlife and river ecosystems, the impact on the water and
habitat restoration. The group of more than 30 youths traveled
over 300 miles exploring the Klamath River after four of the
river’s six dams were removed in the largest dam removal
project in U.S. history.
… Understanding why some waterways form single channels,
while others divide into many threads, has perplexed
researchers for over a century. Geographers at UC Santa Barbara
mapped the thread dynamics along 84 rivers with 36 years of
global satellite imagery to determine what dictates this aspect
of river behavior. “We found that rivers will develop multiple
channels if they erode their banks faster than they deposit
sediment on their opposing banks. This causes a channel to
widen and divide over time,” said lead author Austin Chadwick,
who conducted this study as a postdoctoral researcher at UCSB.
The results, published in the journal Science, solve a
longstanding quandary in the science of rivers. They also
provide insight into natural hazards and river restoration
efforts. … The formula developed by the authors enables
engineers and scientists to estimate the width a restoration
project will need, a deciding factor in a project’s feasibility
and cost. The analysis can also help policymakers prioritize
candidates for recovery.
As Great Salt Lake’s levels continue to sag, yet another
strange phenomenon has surfaced, offering Utah scientists more
opportunities to plumb the vast saline lake’s
secrets. Phragmites-covered mounds in recent years have
appeared on the drying playa off the lake’s southeast shore.
After several years of scratching their heads, University of
Utah geoscientists, deploying a network of piezometers and
aerial electromagnetic surveys, are now finding out what’s
going on under the lakebed that is creating these reed-choked
oases. Bill Johnson, a professor in the Department of Geology &
Geophysics, suspects the circular mounds have formed at spots
where a subsurface plumbing system delivers fresh
groundwater under pressure into the lake and its
surrounding wetlands. … One goal of Johnson’s research
is to determine whether the groundwater can be tapped to
restore broken lakebed crusts, thereby reducing dust
pollution.
… The mild spring appeared to bolster almond
yields statewide. The USDA’s 2025 California almond production
forecast has risen to 3 billion meat pounds, up 7% from May’s
subjective forecast and 10% higher than last year’s crop of
2.73 billion meat pounds. The forecast is based on 1.39 million
bearing acres, explains the National Agricultural Statistics
Service office in Sacramento. … A 3-billion-pound crop
would be California’s second largest in history. … The
heavy load is despite storms that began in early February and
peaked in the middle of the month. Rain, wind and hail hindered
bee hours and blossom growth, but conditions improved in early
March with warm temperatures accelerating the crop’s progress
through the end of bloom. Mild temperatures and timely rain in
spring supported nut growth and continued through early summer,
lessening heat stress in orchards, NASS reports.
On Wednesday, July 9, 2025, Paso Robles Area Groundwater
Authority (PRAGA) held an open house to discuss the possibility
of implementing a new fee for commercial groundwater users.
This added charge will be used to fund the county’s Groundwater
Sustainability Plan in the Paso Robles Groundwater Basin area.
The meeting was held to inform the public of the upcoming
changes while also encouraging questions from them ahead of the
formal hearing scheduled on August 1. … The agency says
the fee will help fund the implementation of the Groundwater
Sustainability Plan, a requirement under California’s
Sustainable Groundwater Management Act (SGMA). The collected
revenue will contribute to the management of the basin to
achieve long-term water balance in the region. As per a press
release, this fee will not be applicable to domestic well
owners who use less than two acre-feet of water per year.
They were once a common and iconic part of the Central Valley
landscape, but they’re growing increasingly rare. Today on
KVPR’s Central Valley Roots, the story of the tankhouse – a key
technology that made the valley bloom, over 100 years ago.
Drive through the rural areas on the east side of the Valley
and chances are at some point you’ll come across an old
farmhouse from the 19th century. In many cases, you’ll see an
odd shaped outbuilding, shaped kind of like a giant wooden milk
carton, two or three stories tall. Some have sloping walls at
the base, while others are boxy rectangles. They’re known as
tankhouses, and while they can be found in places ranging from
Texas to the Northwest, they’re especially identified with
California, and the Central Valley. The earliest
tankhouses were likely built in the 1860s and combined a water
well, water pumping and water storage in one system.
… The windmill would power a pump, which lifted water
from the aquifer to the tank, 20 to 30 feet in the air, which
was enough to supply gravity produced water pressure.
President Donald Trump’s nominee to head NOAA pledged Wednesday
to fully staff the National Weather Service, after catastrophic
Texas floods triggered a new wave of criticism over the
president’s deep cuts across government. Administration critics
have wondered whether efforts to reduce the federal workforce
and eliminate programs affected the government’s ability to
warn residents. … Jacobs, whose background is in weather
modeling, has advocated for retooling NOAA’s weather data
collection processes, including through greater engagement with
private-sector companies that operate their own satellites and
would benefit from multibillion-dollar government contracts.
… Sen. Amy Klobuchar (D-Minn.) told Jacobs that the
nation cannot afford to retrench on climate change given its
direct impacts on communities facing rising frequency
and intensity of storms, floods, droughts, wildfire and other
natural disasters.
The Colorado River is now officially “positive” for invasive
zebra mussels in the latest failure of containment for the
voracious species, after three new samples came up with larvae
July 3, from between Glenwood Springs and Silt. The main stem
Colorado River discoveries piled on top of a confirmed “large
number” of adult zebra mussels in a private body of water in
western Eagle County, and two more positive larvae tests, at
Highline Lake and Mack Mesa Lake, both near the Utah border,
Colorado Parks and Wildlife officials said Wednesday. Sampling
was redoubled throughout June after tests found a single zebra
mussel larvae, or veliger, in the Colorado River from a June 9
collection. It’s the second year in a row veligers are
being discovered in the West’s key river channel through
Colorado, and now CPW officials are also dealing with a
full-blown adult zebra mussel invasion in the privately owned
Eagle County water.
Two major climate disasters of 2025 — the Texas flooding that
killed more than 100 people and the L.A. wildfires in January
that resulted in 30 deaths and wiped out more than 15,000 homes
and businesses — highlight the struggles officials face in
fully preparing for extreme weather
conditions. In both cases, the National Weather
Service offered clear warnings of potentially life-threatening
weather events; in Los Angeles, warnings were given days before
extraordinary winds — of up to 100 mph — slammed a region
already suffering from a record-dry fall. … Since then,
there have been calls for sweeping reforms of how Los Angeles
County prepares for disasters, and investigations into what
went wrong. … With climate change bringing more extreme
deadly weather, local emergency management officials around the
nation are trying to keep up.
Other flood risk and emergency management news around the West:
The remaining handful of tickets for our first-ever
Klamath River Tour are now up for
grabs! This special water tour, Sept. 8 through Sept. 12,
will not be offered every year, so check out the tour details
here. Plus, register for the 41st annual
Water
SummitOct. 1,
themed Embracing Uncertainty in the
West, and read our latest
Western Water story on how FIRO is helping
harness the power of atmospheric rivers.
The combined effects of climate change and air pollution have
led to direct declines in precipitation in the U.S. Southwest,
making drought inevitable, a new study has shown. These
circumstances, which began taking hold in about 1980, are
likely here to stay as the planet warms, according to the
study, published on Wednesday in Nature
Geoscience. Its authors attributed this decades-long trend
toward less precipitation to La Niña-like conditions, weather
patterns that lead to cooler surface temperatures in the
tropical Pacific Ocean. Even if El Niño-like conditions had
prevailed instead, the Southwest would not have experienced a
corresponding surge in rainfall, the researchers found.
… The post-1980 period in the U.S. Southwest exhibited
the fastest soil-drying among past and future periods of
similar lengths — a result that the authors attributed to
human-induced warming and a decline in precipitation.
The state of New Mexico is suing the US air force over its
refusal to comply with orders to address extremely high levels
of Pfas pollution stemming from its base, which has tainted
drinking water for tens of thousands of people, damaged crops
and poisoned dairy cows. Though the military acknowledges
Pfas-laden firefighting foam from Cannon air force base is the
source of a four mile chemical plume in the aquifer below
Clovis, New Mexico, it has refused to comply with most state
orders to address the issue. … In 2018, Cannon’s Pfas
was found to have poisoned drinking water for over 100 private
wells, and has so far taken out one municipal well that serves
Clovis, a city of 40,000 people. Levels found in surface water
were about 27,000 times higher than US Environmental Protection
Agency drinking water limits. … The air force has refused to
pay a $70,000 state fine.
California lawmakers reeling from President Donald Trump’s
assault on clean energy are considering a controversial
strategy to keep projects on track — slashing environmental
permitting further. That plan could intensify a fight between
clean energy advocates and environmentalists over the
trade-offs between building fast and environmental protection
that’s already playing out at home. California officials are
scrambling to respond to congressional Republicans’ budget
“megabill,” signed into law Friday, which demolishes Biden-era
tax credits that incentivize construction of large-scale solar
and wind projects, home energy efficiency improvements and
electric vehicle purchasing — centerpieces of blue states’
strategies to wean themselves off fossil fuels. Clean energy
groups say it will be impossible for California — which already
faces a tight budget — to replace those incentives, and are
instead pushing lawmakers to cut red tape and allow projects to
get shovels in the ground faster.
The frightening partial collapse of an L.A. County sanitation
tunnel under construction left 31 workers scrambling to make
their way to safety on Wednesday evening. … The accident took
place in the Clearwater Project, which is designed to carry
treated, cleanwastewater from the Joint Water Pollution Control
Plant to the ocean. Prior to the accident, the tunnel was
expected to reach Royal Palms Beach by the end of the year, at
which point it would be seven miles long. The plant is
the largest wastewater treatment plant owned and
operated by the L.A. County Sanitation Districts. This is
the first major incident that has taken place since
construction on the project began in late 2019. Work on the
tunnel itself started in 2021. But that work is paused for
the foreseeable future, [L.A. County Sanitation Districts chief
engineer Robert] Ferrante said on Wednesday night.
An isolated storm that caused large quantities of unexploded
fireworks to spill into Lake Tahoe has derailed what was
expected to be the most comprehensive modern study examining
the effects of fireworks shows on the famed lake. Clean Up The
Lake, a nonprofit group traditionally focused on removing
subsurface lake pollution, including the use of the first
human-powered circumnavigation cleanup of Lake Tahoe using
SCUBA, switched gears this July to spearhead the study. It was
aimed at examining the effects of fireworks on the lake, which
has suffered for decades from declining clarity, aquatic
invasive species invasions and other human-induced problems.
… The study was geared toward examining not just trash,
but also water quality, including microplastics in the
water, and had the potential to show the effects of
firework debris and large-scale public events at the lake. …
The barge, which sank in the lake near Incline Village, housed
the very fireworks Clean Up The Lake was planning to study
after their detonation.
Ruby Williams’ birthday was not your average 18th. She
celebrated it on the Klamath River, with a group of young
people making a historic journey paddling from the river’s
headwaters in southern Oregon to its mouth in the Pacific
Ocean, just south of Crescent City, California. It marked the
first time in a century that the descent has been possible,
after the recent removal of four dams allowed the river to flow
freely. Williams, together with fellow paddler Keeya Wiki, 17,
spoke to CNN on day 15 of their month-long journey, which they
are due to complete on Friday. At this point, they had just 141
miles (227 kilometers) of the 310-mile (499 kilometer) journey
left to go and had already passed through some of the most
challenging rapids. … [Wiki said] “I think we’re all just so
grateful, knowing that the salmon can finally go from the mouth
to the headwaters, and that we can go from the headwaters to
the mouth too.”
Energy companies that manage coal ash dumps have asked the
Trump administration for relief from a new regulation requiring
them to inspect and monitor those retention ponds for signs of
pollution. If EPA grants their request, it could delay cleanup
of one the nation’s most significant sources of industrial
waste. In a sweeping rule issued last year, EPA directed
companies to begin cleaning up over 100 coal ash dumps and
landfills, some of which are known to leak toxic,
cancer-causing metals like mercury, lead and arsenic into
groundwater. Now, companies say they are
struggling to evaluate those sites for signs of leaks and
structural problems, as required under the rule. Describing the
rule’s deadlines as “unreasonable and unworkable,” the Utility
Solid Waste Activities Group has asked EPA to delay additional
requirements until the agency creates a permit program to
“review, approve, and verify the existence” of coal ash sites
across the country, according to a letter viewed by POLITICO’s
E&E News.
