A collection of top water news from around California and the West compiled each weekday. Send any comments or article submissions to Foundation Writer Matt Jenkins.
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… Strong El Niños, despite oftentimes offering more
precipitation for California, also carry with them warmer
temperatures thanks to a warmer Pacific Ocean to the west. The
increased warmth of the sea will mean the difference between
rain and snow in many locations, especially in Northern
California where the warmth looks to be more pronounced.
Increased temperatures will push the rain-snow line
higher in the mountains than normal. That could be
felt in a few months time as less snow sticking the foothills.
That being accounted for, a strong signal for more snow
still emerges in the models at altitude. … This is
especially true for the Sierra and North Coast ranges, where
extra snowfall could come in the form of significantly
higher-than-normal totals in the high peaks.
The news of Lake Powell hitting a record low is triggering some
alarm bells on Utah’s Capitol Hill. On Saturday, Lake Powell
recorded its lowest elevation — 3,519.91 ft. That is currently
about 30 feet above the minimum power pool level. Any lower and
Glen Canyon Dam ceases to generate power. … During a
hearing on Tuesday before the Utah State Legislature’s Interim
Natural Resources Appropriations Subcommittee, [Colorado River
Authority of Utah Executive Director Amy] Haas outlined where
things are. … To prop up Lake Powell, the Bureau
of Reclamation has ordered up to a million acre-feet of water
to be released from Flaming Gorge upstream. … Asked
if it has been effective, Haas told FOX 13 News it is possible
the U.S. Department of the Interior orders more releases from
Flaming Gorge.
After years of planning and deliberation, water authorities in
the Salinas Valley voted to move forward with a more
than $1 billion portfolio of projects to address seawater
intrusion last week. The main component of the plan
involves pumping salt water out from where it has
seeped into coastal aquifers, running it through a
reverse osmosis plant and then reinjecting it to push the salt
water back coastwards. With a 9-2 approval vote by the Board of
Directors for the Salinas Valley Basin Groundwater
Sustainability Agency meeting on Aug. 13, the region took a
decisive step toward its state mandated requirement to bring
Salinas Valley groundwater into sustainability by 2040.
… As mandated by the 2014Sustainable Groundwater Management Act, the
extent of seawater intrusion must be pushed back to where it
was in 2017.
As the climate warms, some mountain trees are moving higher up,
while others are spreading downhill. Scientists say something
inside the trees may explain why. And that split could
reshape watersheds and wildfire risk. For years,
scientists have expected mountain trees to move upslope in
search of cooler conditions. But a new global study
found nearly one-third of tree species are moving
downhill instead. That matters because where
trees grow can affect how forests burn and how much water they
soak up before it flows downstream to rural
communities, cities and farms. So why are some trees moving in
one direction while others head the other way? The answer may
lie in how trees move water.
Beleaguered Front Range residents weary of crackling-dry lawns
and long-term drought anxiety were hoping the past week of
heavy clouds and thunderous cloudbursts would fill reservoirs
and turn precipitation maps from red to green. So the question
from many minds was, did it help? The answer is:
Not really. … Denver Water remains so concerned
about its water storage that it is preparing the public
for an official end to lawn watering season on Oct. 1.
“We received some welcome rainstorms, but drought conditions
remain firmly in place,” said Greg Fisher, Denver Water’s
manager of demand planning. … Spot rains can temporarily
place the drain plugs back in reservoirs, water officials say,
but Colorado will need above-average snowstorms throughout the
winter of 2026-27 to truly refill storage and avoid continuing
restrictions.
Other drought impact and response news around the West:
… For decades, the [White Mesa uranium] mill has sparked
debate over whether radioactive contamination threatens human
health by getting into the water and the air. Concerns run
especially deep in the White Mesa Ute Community. … State
regulators and the company that owns the mill contend that any
pollution associated with it is contained. That’s little
consolation to nearby tribal members, who — aware of uranium’s
deadly legacy across the Colorado Plateau — have raised
questions about the potential spread of toxic waste.
Many won’t drink the local water, relying on
bottled water instead. Now the tribe’s concerns have taken on
new urgency as the U.S. pushes to revive domestic uranium
production. … The White Mesa Mill, built in 1980 near
what is now Bears Ears National Monument in southeastern Utah,
is a focal point of this latest uranium boom.
Federal, state, and local leaders gathered in Calexico to
inspect the ongoing environmental and public health crisis
plaguing the New River, signaling a renewed, coordinated
push for a permanent solution to decades of
transboundary pollution. … For decades, toxic waste
has flowed north across the U.S.-Mexico border through the New
River. The pollution causes significant ecological and health
damage to Calexico residents and local communities stretching
all the way to the Salton Sea. Now, the City of Calexico’s “New
River Project” functions as a temporary defense system
by screening heavy trash out of the water as it crosses the
international border.
The Tulare County Board of Supervisors adopted Tuesday morning
an interim ordinance to establish a 45-day moratorium
on data center development in any unincorporated part of the
county, with the possibility of extension up to a
year. The county’s proposal aims to evaluate the
impact of data centers on public health, safety and
infrastructure before permanent regulations are established.
Concerns raised include water consumption, electrical
demand, noise pollution and potential negative impacts
on agriculture and air quality. … On Monday, the Visalia
City Council discussed a proposal to set up a moratorium on
data centers due to concerns over water and electricity
usage. At the meeting, Councilmember Brian Poochigian
emphasized the city’s struggle with
groundwater and electricity.
Yuba Water Agency and the University of California are testing
new technology to monitor levee health in Yuba County and catch
potential problems early. Using a $360,000 grant from Yuba
Water awarded in 2024, researchers with the Center for
Information Technology Research in the Interest of Society and
the Banatao Institute spent 2 years deploying sensors across 18
monitoring sites along the Feather and Bear rivers and Dry
Creek in southern Yuba County. Officials say the sites are
located within reclamation districts 784 and 2103, which help
reduce flooding risk for the communities of Linda, Olivehurst,
Plumas Lake and Wheatland, as well as surrounding commercial
and agricultural areas.
Steelhead are among California’s most remarkable fish. Born in
freshwater streams, these ocean-going rainbow trout can migrate
hundreds of miles to the Pacific Ocean before returning to the
very streams where they hatched to spawn. Understanding where
steelhead live, how they use habitat, and how many adults
return each year is critical to conserving these iconic fish.
“The best way to understand and support this unique species is
to monitor steelhead throughout the year using a variety of
scientific techniques tailored to each season,” according to
Deena Hansen, the California Department of Fish and Wildlife
(CDFW) senior environmental scientist supervisor who oversees
steelhead monitoring across the South Coast Region for the
Department in southern California.
The Trump administration’s plan for dealing with worsening
water shortages along the Colorado River is encountering strong
opposition from Arizona’s leaders, who are warning they could
sue to challenge mandatory water cutbacks that they say would
harm their state. A legal fight could end up before the
U.S. Supreme Court and further complicate efforts by
seven Western states to agree on how to share water from the
shrinking river and its reservoirs, which have fallen to record
low levels. Arizona laid out its objections in a sharply worded
letter to the federal government last week. It said the Trump
administration’s 10-year plan doesn’t adhere to the
Colorado River Compact, the 1922 agreement that originally
divided the water among the states.
A Ninth Circuit panel granted a win to the U.S. Bureau of
Reclamation Monday, confirming a lower court’s finding the
conversion of water service contracts from the
California Central Valley Project doesn’t require a new
environmental review. A three-judge panel unanimously
held the Water Infrastructure Improvements for the Nation Act
required the bureau to change a contract if requested by a
water user, and does not necessitate the agency undertake
environmental review under the National Environmental Policy
Act or Endangered Species Act before converting each water
service contract. … In a statement to Courthouse
News, John Buse of the Center for Biological Diversity,
representing the plaintiffs, called the ruling “unfortunate.”
Want to water your grass limitlessly without risking a fine? In
some Front Range towns,residents still can water without
inhibition despite searing drought.Nearly the entire state is
in some level of drought, according to U.S. Drought Monitor
data released Thursday, but the aridity is especially intense
over the highly populated urban corridor and the mountains that
are the source of much of Colorado’s water. … Despite
widespread severe drought, 13 of the 25 largest cities
and towns in Colorado have not implemented additional mandatory
water use restrictions. … Water managers in many of
the communities without additional drought restrictions have
asked customers to voluntarily cut back water use, to varying
degrees of success.
… Two major data center bills passed a key committee
last week as California’s legislative session nears its close
at the end of this month. Senate Bill 886 aimsto
prevent data centers from raising utility costs for other
consumers, while SB 887 would incentivize
developers to invest in clean energy and nearby communities.
… It’s unclear how Gov. Gavin Newsom (D) will respond to
bills opposed by politically powerful utilities and tech
companies. Last year, Newsom vetoed a bill that would
have required data centers to report their water
usage. … But the politics are shifting.
… Around the entire Willcox Basin, estimates are that
more than 100 drinking wells have dried up in recent
years. Regulators from the Arizona Department of Water
Resources have proposed cutting water use by
farms — by far the basin’s largest water user — by
10% to reduce the pressure on the area’s long-depleted
aquifer. … State officials tookthe first
step this month towards curbing the Willcox Basin’s chronic
groundwater overdraft. Following more than a decade of building
anger and anguished debate over water use and drying wells in
the basin, ADWR has proposed torequire most farmers in the
1,911-square-mile basin covering parts of Cochise and Graham
counties to cut their water use by 10% starting in 2029. But
already, Steve Kisiel, leader of an activist group in the basin
called Cochise Groundwater Stewards, said he’s received
anecdotal accounts of “easily more than 100” wells in the basin
that had to be deepened after they’d gone dry.
A vessel with golden mussels was stopped Saturday by marine
inspectors before it reached the water at Folsom Lake after the
invasive species was found attached to the craft. California
State Parks officials said the discovery was another example of
the ongoing effort to keep golden mussels out of California
waterways and a reminder for boaters to remain vigilant when
launching their vessels. … The lake, owned and
operated by the U.S. Bureau of Reclamation, remains free of
golden mussels, state officials said. The mussels were
discovered Saturday attached to the hull of a boat bound for
Folsom Lake at a decontamination site operated by Mello Marine,
a boat dealer on Folsom-Auburn Road.
At its next meeting Wednesday, the Ukiah City Council is
scheduled to consider nearly tripling the amount of financial
support the city provides toward activities related to the
pending decommissioning of the Potter Valley Project, a
hydroelectric plant in Mendocino County that the Pacific Gas
and Electric Company is seeking to dismantle.
According to the agenda staff report prepared for the Aug. 19
meeting, the board is being asked to consider approving a
contribution of “up to $215,000 to the Mendocino County Inland
Water and Power Commission for Fiscal Year 2026–27 …for
activities related to the Potter Valley Project.”
A regional aquatic team for Colorado Parks and Wildlife, geared
up in waders, waterproof neoprene socks and safety gloves,
moved along last week in the waters of the Lower Dolores River.
The venture Aug. 12 was a fishing operation near the Dove Creek
Pump Station to survey native fish populations. … The stretch
referred to starts below McPhee Reservoir, flowing more than
100 miles until merging with the San Miguel River. It is seen
by CPW biologists as a particularly significant stronghold for
the residential roundtail chub, bluehead sucker, flannelmouth
sucker and a secondary fourth native, the Colorado River
sculpin, which all together support the wider ecosystem’s
health that eventually flows 87 more miles to reach the
Colorado River. The team at CPW uses 30 years worth of data to
understand trends and the overall fishery health at multiple
sites.
A long-discussed transformation of De Anza Cove in Mission Bay
has cleared a key hurdle, giving the City of San Diego a path
toward dramatically expanding wetlands while maintaining space
for recreation and camping. … De Anza Cove is home to a
mix of recreational uses, including walking, paddling, golfing,
camping, and an RV resort. Nearby is the Kendall-Frost Marsh
Reserve, a natural habitat for numerous species. … Under
the plan, marshland could expand significantly by taking in
part of the current Campland site. … The expanded
wetlands could help protect natural habitat and the surrounding
area from flooding.
Namibia’s capital Windhoek faces a challenge that many
fast-growing citiesmay soon confront: How do you secure more
water when there is almost none to spare? In one of the driest
regions of Sub-Saharan Africa, every drop counts. That
necessity led Windhoek to become the first city in the world,
back in the 1960s, to turn treated wastewater directly into
drinking water, a system that today supplies more than a third
of the city’s water needs. The city built in an arid climate is
combining pioneering water recycling, underground water
storage, and community-led conservation to cope with chronic
water scarcity. What lessons can other water-stressed cities
learn from a place where wasting water simply isn’t an option?
