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.
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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.
For the past 20 years, the Colorado
River has been operated under a set of guidelines negotiated
between the seven states that depend on the river. Those
guidelines expire this year, and after five years of grinding
negotiations over a new agreement, the upstream states of
Colorado, Wyoming, Utah and New Mexico remain deadlocked against
the downstream states of California, Arizona and Nevada.
Some 40 million people and 5.5 million acres of farmland depend
on the river’s water. But after the states failed to meet two
federal deadlines in three months, the river is in a moment of
unprecedented crisis. A dire snowpack has left flows just 15
percent of normal, many farms without water and several cities
scrambling to secure water supplies as they gird themselves for
shortages.
Lake Powell ‒ the massive Colorado River
reservoir that produces power for millions of homes
across the West ‒ is the emptiest it has ever
been entering the hottest part of the summer. And the
worst is still to come. Although the lake’s levels have briefly
fallen lower in years past, those low-water levels came in the
spring, before melting snow refilled it. This year, that refill
never happened. As a result, Lake Powell will next spring fall
to “minimum power pool,” according to a newly released federal
projection. If the water levels fall below that, the Glen
Canyon Dam would stop generating electricity.
The House Science, Space and Technology Committee approved
legislation Thursday that would standardize how the federal
government studies data centers and their energy and
water use. The committee passed H.R. 9372, the
Data Infrastructure Energy Measurement and Standards Act, 34-1.
Rep. Daniel Webster (R-Fla.) was the lone no vote. The bill,
led by Rep. Suhas Subramanyam (D-Va.), would direct the
Department of Energy and the National Institute of Standards
and Technology to draw up standards and best practices
for reporting the energy and water use of artificial
intelligence data centers.
Nevada experienced record low snowpacks across northern Nevada
this winter, while summer heat and low precipitation continues
to exacerbate drought in eastern Nevada. Those factors make
protecting Nevada’s limited water resources more pressing than
ever, as legislators prepare to consider a broad reaching
“Omnibus Water Bill” next year. On Wednesday, a workgroup
tasked with evaluating policy updates to Nevada Water Law
presented the Joint Interim Committee on Natural Resources a
bill proposal that would cover a wide range of water related
issues for the 2027 legislative session. … Several details
from the proposed bill were provided to lawmakers on Wednesday
and largely centered on the state’s groundwater,
including a proposal to establish county groundwater
boards and increase funding for the state’s groundwater
retirement program.
… To learn from a city already in the water reuse business,
Mexican officials toured Oceanside’s Pure Water facility on
Tuesday. … Four years ago, Oceanside becamethe first in San
Diego County and the second in California to open a
state-of-the-art purification facility. It turns 3
million gallons of recycled wastewater per day into drinking
water for residents, accounting for 20% of the city’s drinking
water. Mayor Esther Sanchez said years of severe
drought forced Oceanside and other communities in the
western U.S. to think about creating a local water supply, one
that could help them rely less on the Colorado
River and prepare for future droughts. … Sanchez
said she believes a water-reuse approach for Tijuana will work,
as it has for her city.
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.
