An aquifer is a geologic formation that stores, transmits, and
yields significant quantities of water to wells or springs.
Aquifers come in two types. Some are formed in the space between
porous materials such as sand, gravel, silt or clay and are known
as alluvial aquifers or unconfined aquifers. However, in many
places in California, there are aquifers beneath a rock layer
that does not allow water to permeate in measurable amounts.
These are known as confined aquifers.
Confined aquifers under pressure are known as artesian aquifers.
This pressure can push water to the surface, which when drilled
are called artesian wells.
The land had been sinking so fast for so long that the canal
was failing, so they built an entire new canal, but now that’s
sinking as well. It’s a dramatic reminder that after two good
years, California’s water challenges still run deep. The
Friant-Kern Canal, which runs along the east side of the San
Joaquin Valley, and it is the lifeline for many farmers and
communities in that region. The system starts at Millerton
Lake, and from there, it runs 152 miles to the south, powered
entirely by gravity. But gravity means going downhill and that
has gotten complicated. Decades of groundwater pumping have
caused the valley floor to sink, and the canal with it. KPIX
first toured the site back in August of 2022. The fix is a
duplicate canal built right along side the old one, only
higher, so the water can still flow downhill.
Proposed state legislation to modify California’s longstanding
farmland conservation law could pave the way for large swaths
of farm acreage to be repurposed as sites for renewable energy
projects. The California Land Conservation Act of 1965,
commonly known as the Williamson Act, preserves farmland by
assessing property taxes based on the land’s agricultural value
rather than its full market value. Landowners with Williamson
Act contracts, which cover about half the state’s 30 million
acres of farm and ranchland, generally see a 20% to 75%
reduction in property taxes. … The proposed legislation
seeks to align the state’s renewable energy and groundwater
management goals. California’s Sustainable Groundwater
Management Act, or SGMA, requires users to bring groundwater
basins into balance within the next two decades.
In much of the United States, groundwater extraction is
unregulated and unlimited. There are few rules governing who
can pump water from underground aquifers or how much they can
take. This lack of regulation has allowed farmers nationwide to
empty aquifers of trillions of gallons of water for irrigation
and livestock. Droughts fueled by climate change have
exacerbated this trend by depleting rivers and reservoirs,
increasing reliance on this dwindling groundwater. In many
places, such as California’s Central Valley, the results
have been devastating. As aquifers decline, residential wells
start to yield contaminated water or else dry up
altogether, forcing families to rely on emergency deliveries of
bottled water.
A stretch of California that’s considered one of the
fastest-sinking areas in the nation, where farms have pumped so
much water from the ground that the land has slowly collapsed,
is on the verge of state intervention. In a first-ever move,
California regulators are looking to step in and monitor
groundwater pumping in the Tulare Lake subbasin, an
837-square-mile hydrological region flush with cotton, hay and
almonds between Fresno and Bakersfield. Because of heavy
pumping, some places here are sinking a foot a year, causing
roads to buckle and canals to crack. … The looming
confrontation between the state and water agencies marks the
latest, and one of the most significant, developments with
California’s decade-old groundwater legislation, the
Sustainable Groundwater Management Act, or SGMA.
The Foundation’s Central Valley
Tour at the end of April is nearing capacity and
while there’s still some space on the tour, there’s
another very exciting opportunity on the horizon this summer
to engage directly with groundwater experts from
California and across the world. Toward Sustainable
Groundwater in Agriculture: June 18-20 The
3ʳᵈ International Groundwater Conference Linking Science &
Policy returns to San Francisco for the first time
since 2016 and you won’t want to miss this opportunity to hear
about the latest scientific, management, legal and policy
advances for sustaining our groundwater resources in
agricultural regions around the world. Learn how you can
attend, sponsor
or
exhibit at this amazing event!
… U.S. Geological Service data shows Teton Valley’s aquifer
steadily declined in recent decades as development increased
and crop watering systems became more efficient, reducing
infiltration by replacing flood irrigation with pivots and
sprinklers. In addition, the area’s transition from
agricultural valley to recreation hub has meant less acreage
being watered: farms replaced by subdivisions full of houses
with domestic wells, each one a straw guzzling from the
valley’s all-important aquifer. … Recharge has benefited
farmers and fish in western communities like Idaho’s Eastern
Snake River Plain and California’s Central Valley, and the
group believes the data shows it can work in the Teton Basin.
They hope it can. In addition to providing a bulwark against
future water shortages or legislative changes to water rights
laws, they want to do something groundbreaking: create a
market-based system to pay farmers for incidental recharge.
As the date of reckoning for excessive groundwater pumping in
Tulare County grows closer, lobbying by water managers and
growers has ramped up. The Friant Water Authority, desperate to
protect its newly rebuilt – yet still sinking –
Friant-Kern Canal, has beseeched the Water Resources Control
Board to get involved. Specifically, it has asked board members
to look into how the Eastern Tule Groundwater Sustainability
Agency (GSA) has, or has not, curbed over pumping that affects
the canal. Meanwhile, the Eastern Tule groundwater agency has
been doing a bit of its own lobbying. It recently hosted all
five members of the Water Board on three separate tours of the
region, including the canal. Because the tours were staggered,
there wasn’t a quorum of board members, which meant they
weren’t automatically open to the public.
Arizona House Republicans convened in a newly created committee
Thursday afternoon to discuss an investigation into the state’s
Democrat attorney general. The conservative lawmakers announced
the creation of the House Committee on Executive Oversight
Wednesday in response to Attorney General Kris Mayes’ ongoing
investigations into “megafarms” she says are overusing
groundwater and draining the wells of rural Arizonans. …
Mayes has recently indicated in multiple town halls across
rural Arizona, specifically La Paz County, her intent to file a
public nuisance complaint against large industrial farms and
corporations that she says are sucking rural Arizonans dry.
As Attorney General Kris Mayes gathers evidence to take action
against corporate farms’ groundwater pumping, some lawmakers
would like to establish protections that discourage such
lawsuits. Agricultural operations could get their legal fees
paid by the plaintiff if they are sued in a nuisance action to
reduce or take away their water use under a bill filed early
this year by state Rep. Austin Smith, R-Wittmann. The measure
would have a “chilling effect” on new approaches to reduce
groundwater use, several legal experts told The Arizona
Republic, because the claimant would need to pay filing fees
and attorney fees for themselves and the sued party.
The $171 million Kern Fan Groundwater Storage project – with a
unique “eco-twist” – received another chunk of public funding
just as the first section of the 1,300-acre project had a
formal christening on Wednesday. Officials with Rosedale-Rio
Bravo Water Storage District, Irvine Ranch Water District and
the Bureau of Reclamation gathered at the project site near
Enos Lane west of Bakersfield to look over construction of the
first part of Phase 1, which began in February. The Bureau
announced earlier in the week that it had approved a $3.9
million grant for the project, which is in addition to $4.7
million awarded by the Bureau in 2023. That funding requires a
75% match from Rosedale-Rio Bravo and Irvine Ranch.
The Mid-Kings River Groundwater Sustainability Agency is
looking to impose a pumping fee of nearly $100 per
acre-foot. Mid-Kings River GSA is comprised of the Kings
County Water District, the City of Hanford and Kings
County. The big picture: The GSA is proposing a
pumping fee maximum of $95 per acre-foot. This comes after
the State views that the region has not made enough progress
through the Sustainable Groundwater Management Act
(SGMA). The state wants agriculture and industrial water
pumpers to cut back or pay to mitigate the impacts on
other users. The state could move to put the subbasin in
probation if it does not feel confident in local groundwater
management, and could completely take over operations in 2025.
Does the public sector need the private sector’s help to
address the freshwater crisis? That’s the controversial thesis
of Stanford law and environmental social sciences professor
Barton “Buzz” Thompson’s provocatively titled new book: Liquid
Asset: How Business and Government Can Partner to Solve the
Freshwater Crisis. (Buzz is also a member of the PPIC Water
Policy Center’s research network.) We sat down with him to hear
more. … The private sector is already involved in water in
many ways, some more controversial than others. … We
think of the Sustainable Groundwater Management Act (SGMA) as a
public program, and it is. The legislature passed the law, and
public agencies are implementing it. But if you look carefully,
you’ll see private handprints all over SGMA’s success.
Members of the state Water Resources Control Board voted
unanimously on Tuesday, March 19, to reduce pumping fees for
groundwater users in subbasins that come under state control,
known as “probationary status.” The controversial fee was
lowered from $40 per-acre-foot of pumped water to $20 per acre
foot. The board will hold its first probationary hearing
on the Tulare Lake subbasin, which covers Kings County, on
April 16. … Groundwater sustainability plans (GSPs) for
Tulare Lake and five other San Joaquin Valley subbasins were
rejected twice by the state as inadequate, which is why they
are now coming before the Water Board to determine if they
should be put into probationary status.
On the eve of its first subbasin probationary hearing, the
state Water Resources Control Board announced it will vote on
whether to reduce a controversial groundwater extraction
fee. The board will vote at its March 19 meeting on
whether to cut the fee from $40 to $20-per-acre-foot for well
owners in a subbasin placed on probation. It will hold
its first probationary hearing on the Tulare Lake subbasin,
which covers Kings County, on April 16. Then the Tule subbasin,
in the southern half of the valley portion of Tulare County,
will come up for hearing Sept. 17. The extraction fee would
only be charged if the Water Board had to step in and
administer a subbasin in cases where it finds local groundwater
agencies aren’t up to the job.
A Los Angeles County Superior Court judge confirmed that the
Cuyama Valley Groundwater Basin is one connected basin—not
separate subbasins—allowing for the groundwater adjudication to
move forward following a year and a half of delays and
litigation. … The Cuyama Valley Groundwater Basin is one of
California’s 21 critically overdrafted basins that was required
under the 2014 California Sustainable Groundwater Management
Act (SGMA) to create a groundwater sustainability agency (GSA)
and corresponding groundwater sustainability plan.
A new but little-known change in
California law designating aquifers as “natural infrastructure”
promises to unleash a flood of public funding for projects that
increase the state’s supply of groundwater.
The change is buried in a sweeping state budget-related law,
enacted in July, that also makes it easier for property owners
and water managers to divert floodwater for storage underground.
A new underground mapping technology
that reveals the best spots for storing surplus water in
California’s Central Valley is providing a big boost to the
state’s most groundwater-dependent communities.
The maps provided by the California Department of Water Resources
for the first time pinpoint paleo valleys and similar prime
underground storage zones traditionally found with some guesswork
by drilling exploratory wells and other more time-consuming
manual methods. The new maps are drawn from data on the
composition of underlying rock and soil gathered by low-flying
helicopters towing giant magnets.
The unique peeks below ground are saving water agencies’
resources and allowing them to accurately devise ways to capture
water from extreme storms and soak or inject the surplus
underground for use during the next drought.
“Understanding where you’re putting and taking water from really
helps, versus trying to make multimillion-dollar decisions based
on a thumb and which way the wind is blowing,” said Aaron Fukuda,
general manager of the Tulare Irrigation District, an early
adopter of the airborne electromagnetic or
AEM technology in California.
It was exactly the sort of deluge
California groundwater agencies have been counting on to
replenish their overworked aquifers.
The start of 2023 brought a parade of torrential Pacific storms
to bone dry California. Snow piled up across the Sierra Nevada at
a near-record pace while runoff from the foothills gushed into
the Central Valley, swelling rivers over their banks and filling
seasonal creeks for the first time in half a decade.
Suddenly, water managers and farmers toiling in one of the
state’s most groundwater-depleted regions had an opportunity to
capture stormwater and bank it underground. Enterprising agencies
diverted water from rushing rivers and creeks into manmade
recharge basins or intentionally flooded orchards and farmland.
Others snagged temporary permits from the state to pull from
streams they ordinarily couldn’t touch.
Growing up in the shadow of the
Rocky Mountains, Andrew Schwartz never missed an opportunity to
play in – or study – a Colorado snowstorm. During major
blizzards, he would traipse out into the icy wind and heavy
drifts of snow pretending to be a scientist researching in
Antarctica.
Decades later, still armed with an obsession for extreme weather,
Schwartz has landed in one of the snowiest places in the West,
leading a research lab whose mission is to give California water
managers instant information on the depth and quality of snow
draping the slopes of the Sierra Nevada.
To survive the next drought and meet
the looming demands of the state’s groundwater sustainability
law, California is going to have to put more water back in the
ground. But as other Western states have found, recharging
overpumped aquifers is no easy task.
Successfully recharging aquifers could bring multiple benefits
for farms and wildlife and help restore the vital interconnection
between groundwater and rivers or streams. As local areas around
California draft their groundwater sustainability plans, though,
landowners in the hardest hit regions of the state know they will
have to reduce pumping to address the chronic overdraft in which
millions of acre-feet more are withdrawn than are naturally
recharged.
The southern part of California’s Central Coast from San Luis Obispo County to Ventura County, home to about 1.5 million people, is blessed with a pleasing Mediterranean climate and a picturesque terrain. Yet while its unique geography abounds in beauty, the area perpetually struggles with drought.
Indeed, while the rest of California breathed a sigh of relief with the return of wet weather after the severe drought of 2012–2016, places such as Santa Barbara still grappled with dry conditions.
Our event calendar is an excellent
resource for keeping up with water events in California and the
West.
Groundwater is top of mind for many water managers as they
prepare to meet next January’s deadline for submitting
sustainability plans required under California’s Sustainable
Groundwater Management Act. We have several upcoming featured
events listed on our calendar that focus on a variety of relevant
groundwater topics:
Groundwater helped make Kern County
the king of California agricultural production, with a $7 billion
annual array of crops that help feed the nation. That success has
come at a price, however. Decades of unchecked groundwater
pumping in the county and elsewhere across the state have left
some aquifers severely depleted. Now, the county’s water managers
have less than a year left to devise a plan that manages and
protects groundwater for the long term, yet ensures that Kern
County’s economy can continue to thrive, even with less water.
Although Santa Monica may be the most aggressive Southern California water provider to wean itself from imported supplies, it is hardly the only one looking to remake its water portfolio.
In Los Angeles, a city of about 4 million people, efforts are underway to dramatically slash purchases of imported water while boosting the amount from recycling, stormwater capture, groundwater cleanup and conservation. Mayor Eric Garcetti in 2014 announced a plan to reduce the city’s purchase of imported water from Metropolitan Water District by one-half by 2025 and to provide one-half of the city’s supply from local sources by 2035. (The city considers its Eastern Sierra supplies as imported water.)
Imported water from the Sierra
Nevada and the Colorado River built Southern California. Yet as
drought, climate change and environmental concerns render those
supplies increasingly at risk, the Southland’s cities have ramped
up their efforts to rely more on local sources and less on
imported water.
Far and away the most ambitious goal has been set by the city of
Santa Monica, which in 2014 embarked on a course to be virtually
water independent through local sources by 2023. In the 1990s,
Santa Monica was completely dependent on imported water. Now, it
derives more than 70 percent of its water locally.
The whims of political fate decided
in 2018 that state bond money would not be forthcoming to help
repair the subsidence-damaged parts of Friant-Kern Canal, the
152-mile conduit that conveys water from the San Joaquin River to
farms that fuel a multibillion-dollar agricultural economy along
the east side of the fertile San Joaquin Valley.
The growing leadership of women in water. The Colorado River’s persistent drought and efforts to sign off on a plan to avert worse shortfalls of water from the river. And in California’s Central Valley, promising solutions to vexing water resource challenges.
These were among the topics that Western Water news explored in 2018.
We’re already planning a full slate of stories for 2019. You can sign up here to be alerted when new stories are published. In the meantime, take a look at what we dove into in 2018:
In 1983, a landmark California Supreme Court ruling extended the public trust doctrine to tributary creeks that feed Mono Lake, which is a navigable water body even though the creeks themselves were not. The ruling marked a dramatic shift in water law and forced Los Angeles to cut back its take of water from those creeks in the Eastern Sierra to preserve the lake.
Now, a state appellate court has for the first time extended that same public trust doctrine to groundwater that feeds a navigable river, in this case the Scott River flowing through a picturesque valley of farms and alfalfa in Siskiyou County in the northern reaches of California.
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.
As California embarks on its unprecedented mission to harness groundwater pumping, the Arizona desert may provide one guide that local managers can look to as they seek to arrest years of overdraft.
Groundwater is stressed by a demand that often outpaces natural and artificial recharge. In California, awareness of groundwater’s importance resulted in the landmark Sustainable Groundwater Management Act in 2014 that aims to have the most severely depleted basins in a state of balance in about 20 years.
Spurred by drought and a major
policy shift, groundwater management has assumed an unprecedented
mantle of importance in California. Local agencies in the
hardest-hit areas of groundwater depletion are drawing plans to
halt overdraft and bring stressed aquifers to the road of
recovery.
Along the way, an army of experts has been enlisted to help
characterize the extent of the problem and how the Sustainable
Groundwater Management Act of 2014 is implemented in a manner
that reflects its original intent.
Springs are where groundwater becomes surface water, acting as openings
where subsurface water can discharge onto the ground or directly
into other water bodies. They can also be considered the
consequence of an overflowing
aquifer. As a result, springs often serve as headwaters to streams.
This printed issue of Western Water looks at California
groundwater and whether its sustainability can be assured by
local, regional and state management. For more background
information on groundwater please refer to the Foundation’s
Layperson’s Guide to Groundwater.
This printed issue of Western Water examines
groundwater management and the extent to which stakeholders
believe more efforts are needed to preserve and restore the
resource.
This printed issue of Western Water examines
groundwater banking, a water management strategy with appreciable
benefits but not without challenges and controversy.
This printed issue of Western Water looks at hydraulic
fracturing, or “fracking,” in California. Much of the information
in the article was presented at a conference hosted by the
Groundwater Resources Association of California.
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.
Water as a renewable resource is depicted in this 18×24 inch
poster. Water is renewed again and again by the natural
hydrologic cycle where water evaporates, transpires from plants,
rises to form clouds, and returns to the earth as precipitation.
Excellent for elementary school classroom use.
Fashioned after the popular California Water Map, this 24×36 inch
poster was extensively re-designed in 2017 to better illustrate
the value and use of groundwater in California, the main types of
aquifers, and the connection between groundwater and surface
water.
The 28-page Layperson’s Guide to Groundwater is an in-depth,
easy-to-understand publication that provides background and
perspective on groundwater. The guide explains what groundwater
is – not an underground network of rivers and lakes! – and the
history of its use in California.
The 28-page Layperson’s Guide to Water Rights Law, recognized as
the most thorough explanation of California water rights law
available to non-lawyers, traces the authority for water flowing
in a stream or reservoir, from a faucet or into an irrigation
ditch through the complex web of California water rights.