Southern California’s Salton Sea—approximately 232 feet (70 m)
below sea level— is one of the world’s largest inland seas. It
has 130 miles of shoreline and is larger than Lake Tahoe.
The sea was created in 1905 when the Colorado River broke through
a series of dikes, flooding a salty basin known as the Salton
Sink in the Imperial Valley. The sea is an important stopping
point for 1 million migratory waterfowl, and serves as critical
habitat for birds moving south to Mexico and Central America.
Overall, the Salton Sea harbors more than 270 species of birds
including ducks, geese, cormorants and pelicans.
Developers are descending on a rural desert
community along California’s Mexican border, trying to
build over $15 billion worth of data centers to power Silicon
Valley’s artificial intelligence boom. But concerns over
pollution and Colorado River water use have
turned one of the projects into a charged legal fight. …
Imperial Valley Computer Manufacturing LLC, started
purchasing land for the project in 2024, spending $12 million
on 95 acres in the city of Imperial, as well as $15 million
more for land in the county and nearby city of El Centro,
according to a lawsuit filed last month. … [The] company has
also said that the data center will send its used water
to the Salton Sea, helping reduce air pollution from
the drying body of water.
I have been attending a series of four lectures at the Imperial
Valley College (IVC) about a dying Salton Sea, the largest lake
in California, and the potential catastrophic and environmental
threat it presents to the health and welfare of Imperial County
residents and communities. … One of the most salient and
distressing lectures were by UCR researchers whose ongoing
studies of the lake, and contaminants contained in the surface
water and in the middle of the lake bed obtained through sample
cores clearly show that in the near future if solutions are not
implemented soon, this region will experience dire health
consequences. –Written by Calexico Chronicle guest columnist Victor
Zazueta.
Most of you have heard that California’s Salton Sea would not
currently exist were it not for the nearly 1 million acre feet
of agricultural runoff that’s drained into it every year.
… Meanwhile 132 miles south in Sonora another body of
water has formed from American-made runoff, and it’s also a
paradox. Ciénega de Santa Clara is technically a brackish water
wetland consisting of marshlands and lagoons, and its
classification as “anthropogenic” stems from the fact that it
was inadvertently created by, and entirely sustained by human
engineering. This “human engineering” began in 1965 after the
U.S.Bureau of Reclamation rerouted approximately 100,000 acre
feet of salty runoff from the Wellton-Mohawk Irrigation
District away from the Colorado River and 13 miles into Mexico.
The Salton Sea, 35 miles long and between nine and 15 miles
wide, is the largest lake by surface area in California. Its
history is complex—and an anomaly in the natural world. Today’s
Salton Sea lies 228 feet below sea level, on the site of the
much-larger ancient Lake Cahuilla. Peaking at 40 feet above sea
level, Lake Cahuilla encompassed much of the Imperial, Mexicali
and Coachella valleys, most recently between 500 and 1,000
years ago. With evaporation and no outlet, over the years, Lake
Cahuilla dried up, leaving a huge 2,000-square-mile desert
sink—from the Gulf of California to the Banning Pass. A
horizontal dark band from the earlier shoreline is easily
spotted along the cliffs near today’s Salton Sea.
Imperial Valley Computer Manufacturing LLC has filed a civil
rights lawsuit in the United States District Court, Southern
District of California, against the city of Imperial and
several senior officials, according to a press release from
IVCM. The litigation alleges a coordinated campaign of
administrative obstruction and targeted retaliation designed to
derail a permitted $10 billion AI data center project.
… The lawsuit further charges that the city sabotaged a
critical environmental initiative. The developer had secured an
agreement to purchase reclaimed water, treat it, and
release 5.25 million gallons of fresh water daily into
the Salton Sea watershed.
The Salton Sea Bird Festival will return on Saturday, Jan. 17,
2026, offering birdwatchers and outdoor enthusiasts a rare look
at one of the Pacific Flyway’s most critical stops during the
peak of winter migration. The daylong event, organized through
a partnership of state, federal, and nonprofit organizations,
features a diverse lineup of field trips and educational
activities designed to showcase the ecological significance of
California’s largest inland lake. Among the day’s highlights is
a guided public tour of the Species Conservation Habitat (SCH)
project. Hosted by the Salton Sea Management Program (SSMP),
the tour provides a behind-the-scenes look at the 9,500-acre
aquatic restoration site located at the southern end of the
sea.
*IMPORTANT* In anticipation of high demand, the Foundation is limiting tickets to a maximum of 2 per organization. Contact Programs Director Nick Gray via email with any questions.
Explore the lower Colorado River firsthand where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to some 40 million people in the Southwest across seven states, 30 tribal nations and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs is the focus of this tour.
Hilton Garden Inn Las Vegas Strip South
7830 S Las Vegas Blvd
Las Vegas, NV 89123
This tour explored the lower Colorado River firsthand where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to some 40 million people in the Southwest across seven states, 30 tribal nations and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
Hilton Garden Inn Las Vegas Strip South
7830 S Las Vegas Blvd
Las Vegas, NV 89123
Learn the history and challenges facing the West’s most dramatic
and developed river.
The Layperson’s Guide to the Colorado River Basin introduces the
1,450-mile river that sustains 40 million people and millions of
acres of farmland spanning seven states and parts of northern
Mexico.
The 28-page primer explains how the river’s water is shared and
managed as the Southwest transitions to a hotter and drier
climate.
This tour explored the lower Colorado River firsthand where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to some 40 million people in the Southwest across seven states, 30 tribal nations and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
Hilton Garden Inn Las Vegas Strip South
7830 S Las Vegas Blvd
Las Vegas, NV 89123
This special Foundation water tour journeyed along the Eastern Sierra from the Truckee River to Mono Lake, through the Owens Valley and into the Mojave Desert to explore a major source of water for Southern California, this year’s snowpack and challenges for towns, farms and the environment.
This tour explored the lower Colorado River firsthand where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to some 40 million people in the Southwest across seven states, 30 tribal nations and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
Hyatt Place Las Vegas At Silverton Village
8380 Dean Martin Drive
Las Vegas, NV 89139
The lower Colorado River has virtually every drop allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to 40 million people in the Southwest across seven states, 30 tribal nations and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
Hyatt Place Las Vegas At Silverton Village
8380 Dean Martin Drive
Las Vegas, NV 89139
For more than 20 years, Tanya
Trujillo has been immersed in the many challenges of the Colorado
River, the drought-stressed lifeline for 40 million people from
Denver to Los Angeles and the source of irrigation water for more
than 5 million acres of winter lettuce, supermarket melons and
other crops.
Trujillo has experience working in both the Upper and Lower
Basins of the Colorado River, basins that split the river’s water
evenly but are sometimes at odds with each other. She was a
lawyer for the state of New Mexico, one of four states in the
Upper Colorado River Basin, when key operating guidelines for
sharing shortages on the river were negotiated in 2007. She later
worked as executive director for the Colorado River Board of
California, exposing her to the different perspectives and
challenges facing California and the other states in the river’s
Lower Basin.
State work to improve wildlife habitat and tamp down dust at California’s ailing Salton Sea is finally moving forward. Now the sea may be on the verge of getting the vital ingredient needed to supercharge those restoration efforts – money.
The shrinking desert lake has long been a trouble spot beset by rising salinity and unhealthy, lung-irritating dust blowing from its increasingly exposed bed. It shadows discussions of how to address the Colorado River’s two-decade-long drought because of its connection to the system. The lake is a festering health hazard to nearby residents, many of them impoverished, who struggle with elevated asthma risk as dust rises from the sea’s receding shoreline.
Out of sight and out of mind to most
people, the Salton Sea in California’s far southeast corner has
challenged policymakers and local agencies alike to save the
desert lake from becoming a fetid, hyper-saline water body
inhospitable to wildlife and surrounded by clouds of choking
dust.
The sea’s problems stretch beyond its boundaries in Imperial and
Riverside counties and threaten to undermine multistate
management of the Colorado River. A 2019 Drought Contingency Plan for the
Lower Colorado River Basin was briefly stalled when the Imperial
Irrigation District, holding the river’s largest water
allocation, balked at participating in the plan because, the
district said, it ignored the problems of the Salton Sea.
This event explored the lower Colorado River where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to 40 million people in the Southwest across seven states and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
Even as stakeholders in the Colorado River Basin celebrate the recent completion of an unprecedented drought plan intended to stave off a crashing Lake Mead, there is little time to rest. An even larger hurdle lies ahead as they prepare to hammer out the next set of rules that could vastly reshape the river’s future.
Set to expire in 2026, the current guidelines for water deliveries and shortage sharing, launched in 2007 amid a multiyear drought, were designed to prevent disputes that could provoke conflict.
One of California Gov. Gavin
Newsom’s first actions after taking office was to appoint Wade
Crowfoot as Natural Resources Agency secretary. Then, within
weeks, the governor laid out an ambitious water agenda that
Crowfoot, 45, is now charged with executing.
That agenda includes the governor’s desire for a “fresh approach”
on water, scaling back the conveyance plan in the Sacramento-San
Joaquin Delta and calling for more water recycling, expanded
floodplains in the Central Valley and more groundwater recharge.
For the bulk of her career, Jayne
Harkins has devoted her energy to issues associated with the
management of the Colorado River, both with the U.S. Bureau of
Reclamation and with the Colorado River Commission of Nevada.
Now her career is taking a different direction. Harkins, 58, was
appointed by President Trump last August to take the helm of the
United States section of the U.S.-Mexico agency that oversees
myriad water matters between the two countries as they seek to
sustainably manage the supply and water quality of the Colorado
River, including its once-thriving Delta in Mexico, and other
rivers the two countries share. She is the first woman to be
named the U.S. Commissioner of the International Boundary and
Water Commission for either the United States or Mexico in the
commission’s 129-year history.
This tour explored the lower Colorado River where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to 40 million people in the Southwest across seven states and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs is the focus of this tour.
Silverton Hotel
3333 Blue Diamond Road
Las Vegas, NV 89139
There’s going to be a new governor
in California next year – and a host of challenges both old and
new involving the state’s most vital natural resource, water.
So what should be the next governor’s water priorities?
That was one of the questions put to more than 150 participants
during a wrap-up session at the end of the Water Education
Foundation’s Sept. 20 Water Summit in Sacramento.
We explored the lower Colorado River where virtually every drop
of the river is allocated, yet demand is growing from myriad
sources — increasing population, declining habitat, drought and
climate change.
The 1,450-mile river is a lifeline to 40 million people in
the Southwest across seven states and Mexico. How the Lower Basin
states – Arizona, California and Nevada – use and manage this
water to meet agricultural, urban, environmental and industrial
needs was the focus of this tour.
Hampton Inn Tropicana
4975 Dean Martin Drive, Las Vegas, NV 89118
California voters may experience a sense of déjà vu this year when they are asked twice in the same year to consider water bonds — one in June, the other headed to the November ballot.
Both tackle a variety of water issues, from helping disadvantaged communities get clean drinking water to making flood management improvements. But they avoid more controversial proposals, such as new surface storage, and they propose to do some very different things to appeal to different constituencies.
Tickets are now on sale for the Water Education Foundation’s April 11-13 tour of the Lower Colorado River.
Don’t miss this opportunity to visit key sites along one of the nation’s most famous rivers, including a private tour of Hoover Dam, Central Arizona Project’s Mark Wilmer pumping plant and the Havasu National Wildlife Refuge. The tour also visits the Salton Sea, Slab City, the All-American Canal and farming regions in the Imperial and Coachella valleys.
This issue of Western Water discusses the challenges
facing the Colorado River Basin resulting from persistent
drought, climate change and an overallocated river, and how water
managers and others are trying to face the future.
This three-day, two-night tour explored the lower Colorado River
where virtually every drop of the river is allocated, yet demand
is growing from myriad sources — increasing population,
declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to 40 million people in
the Southwest across seven states and Mexico. How the Lower Basin
states – Arizona, California and Nevada – use and manage this
water to meet agricultural, urban, environmental and industrial
needs is the focus of this tour.
Best Western McCarran Inn
4970 Paradise Road
Las Vegas, NV 89119
Scientifically and legislatively, lakes are indistinguishable
from ponds, but lakes generally are considered to be longer and
deeper lentic, or still, waters. In the 18th and
19th centuries, scientists attempted to distinguish
the two more formally, stating that ponds were shallow enough to
allow sunlight to penetrate to the bottom, but this exists
today as an unofficial point.
Fearing an imminent public health threat, the director of the
University of California, Irvine’s Salton Sea Initiative said the
State Water Resources Control Board should step in and regulate
the rate of water transferred from the Imperial Valley to coastal
California as part of the Quantification Settlement Agreement.
The shallow, briny inland lake at the southeastern edge of
California is slowly evaporating and becoming more saline –
threatening the habitat for fish and birds and worsening air
quality as dust from the dry lakebed is whipped by the constant
winds.
(Read this excerpt from the May/June 2015 issue along with
the editor’s note. Click here to
subscribe to Western Water and get full access.)
This 25-minute documentary-style DVD, developed in partnership
with the California Department of Water Resources, provides an
excellent overview of climate change and how it is already
affecting California. The DVD also explains what scientists
anticipate in the future related to sea level rise and
precipitation/runoff changes and explores the efforts that are
underway to plan and adapt to climate.
A new look for our most popular product! And it’s the perfect
gift for the water wonk in your life.
Our 24×36-inch California Water Map is widely known for being the
definitive poster that shows the integral role water plays in the
state. On this updated version, it is easier to see California’s
natural waterways and man-made reservoirs and aqueducts
– including federally, state and locally funded
projects – the wild and scenic rivers system, and
natural lakes. The map features beautiful photos of
California’s natural environment, rivers, water projects,
wildlife, and urban and agricultural uses and the
text focuses on key issues: water supply, water use, water
projects, the Delta, wild and scenic rivers and the Colorado
River.
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.
The Pacific Flyway is one of four
major North American migration routes for birds, especially
waterbirds, and stretches from Alaska in the north
to Patagonia in South America.
Each year, birds follow ancestral patterns as they travel the
flyway on their annual north-south migration. Along the way, they
need stopover sites such as wetlands with suitable habitat and
food supplies. In California, 95 percent of historic
wetlands have been lost, yet the Central Valley hosts some of the
world’s largest populations of wintering birds.
The Imperial Valley in the
southeastern corner of California receives the Colorado River
Basin’s single-largest share of water to support much of the
nation’s fruit and vegetable supply and hay for the
cattle and dairy industries.
Water from the Colorado River transformed the sagebrush and
desert sands of the Imperial, Coachella and Palo Verde valleys
into lush, green agricultural fields. The growing season is
year-round, the water plentiful and the local economies are based
almost entirely on farming. As the waters of the Colorado River
allowed the deserts to bloom, they allowed southern California
cities like Los Angeles and San Diego to boom. Suburbs, jobs and
people followed, and the population within the six counties
served by Metropolitan Water District of Southern California
(MWD) grew from 2.8 million in 1930 to more than 17 million
today.
