As the single largest water-consuming industry, agriculture has
become a focal point for efforts to promote water conservation.
The drive for water use efficiency has become institutionalized
in agriculture through numerous federal, state and local
programs. Since the 1980s, some water districts serving
agricultural areas have developed extensive water conservation
programs to help their customers (From Aquapedia).
An interdisciplinary team of scientists and researchers from
University of California, Davis, are studying agave plants in
the Golden State as farmers are turning to the crop as a
potential drought-tolerant option of the future. The research
is centered on studying agave genetics, virus susceptibility,
pest control, soil management and crop productivity, said Ron
Runnebaum, a viticulture and enology professor who is leading
the team of researchers at the newly formed UC Davis Agave
Center. … Agave plants don’t require much water and
their hardy leaves are fire resistant. The crop can be used as
a fiber, distilled into spirits or converted into a sweetener.
That combination of traits could offer an alternative to
fallowing fields by switching from thirsty crops to one
requiring less water.
With chronic water shortages afflicting the Colorado River,
discussions about how to cut usage have increasingly focused on
a thirsty crop that consumes an especially large share of the
river’s water: hay that is grown to feed cattle and produce
beef and dairy products. In a new study, researchers found that
alfalfa and other cattle-feed crops consume 46% of the water
that is diverted from the river, accounting for nearly
two-thirds of agricultural water use. The research also shows
that agriculture is the dominant user of Colorado River water,
accounting for 74% of the water that is diverted — about three
times the combined usage of all the cities that depend on the
river. The study presents the most detailed analysis of its
kind to date, including extensive data on where the river’s
water goes across seven Western states and northern Mexico.
California farmers could save massive amounts of water if they
planted less thirsty — but also less lucrative — crops such as
grains and hay instead of almonds and alfalfa, according to new
research by scientists who used remote sensing and artificial
intelligence. Such a seismic shift in the nation’s most
productive agricultural state could cut consumption by roughly
93%, researchers with UC Santa Barbara and the NASA Jet
Propulsion Laboratory reported Monday. But Anna Boser, the
study’s lead author, acknowledged that replacing all of
California’s water-intensive crops with the least-intensive
ones is an unrealistic economic scenario. … In a
less-extreme scenario, Boser and her colleagues reported that
fallowing 5% of fields with the most water-intensive crops
could cut water consumption by more than 9%, according to
the study, published in the journal Nature Communications.
Efficiently managing agricultural irrigation is vital for food
security today and into the future under climate change. Yet,
evaluating agriculture’s hydrological impacts and strategies to
reduce them remains challenging due to a lack of field-scale
data on crop water consumption. Here, we develop a method to
fill this gap using remote sensing and machine learning, and
leverage it to assess water saving strategies in California’s
Central Valley. We find that switching to lower water intensity
crops can reduce consumption by up to 93%, but this requires
adopting uncommon crop types. … These results reveal diverse
approaches for achieving sustainable water use, emphasizing the
potential of sub-field scale crop water consumption maps to
guide water management in California and beyond.
The future availability of irrigation water for California
growers has never been less certain. To help growers survive a
future of “water uncertainty,” the non-profit Soil Health
Academy today announced an on-farm school at the Burroughs
Family almond orchard April 30-May 2 in Denair, California,
that will offer agricultural producers principles and tools to
grow profits and resiliency with much less water. The
school, sponsored by Simple Mills, will feature instruction,
demonstrations and insights from world-renowned soil health
pioneers Gabe Brown, Allen Williams, Ph.D., along with Chuck
Schembre and other orchard, vineyard and vegetable production
experts.
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.
Across a sprawling corner of southern Tulare County snug against the Sierra Nevada, a bounty of navel oranges, grapes, pistachios, hay and other crops sprout from the loam and clay of the San Joaquin Valley. Groundwater helps keep these orchards, vineyards and fields vibrant and supports a multibillion-dollar agricultural economy across the valley. But that bounty has come at a price. Overpumping of groundwater has depleted aquifers, dried up household wells and degraded ecosystems.
Innovative efforts to accelerate
restoration of headwater forests and to improve a river for the
benefit of both farmers and fish. Hard-earned lessons for water
agencies from a string of devastating California wildfires.
Efforts to drought-proof a chronically water-short region of
California. And a broad debate surrounding how best to address
persistent challenges facing the Colorado River.
These were among the issues Western Water explored in
2019, and are still worth taking a look at in case you missed
them.
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.
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.
The message is oft-repeated that
water must be conserved and used as wisely as possible.
The California Water Code calls water use efficiency “the
efficient management of water resources for beneficial uses,
preventing waste, or accomplishing additional benefits with the
same amount of water.”
This printed issue of Western Water examines
agricultural water use – its successes, the planned state
regulation to quantify its efficiency and the potential for
greater savings.
30-minute DVD that traces the history of the U.S. Bureau of
Reclamation and its role in the development of the West. Includes
extensive historic footage of farming and the construction of
dams and other water projects, and discusses historic and modern
day issues.
There are two constants regarding agricultural water use –
growers will continue to come up with ever more efficient and
innovative ways to use water and they will always be pressed to
do more.
It’s safe to say the matter will not be settled anytime soon,
given all the complexities that are a part of the water use
picture today. While officials and stakeholders grapple to find a
lasting solution to California’s water problems that balances
environmental and economic needs, those who grow food and fiber
for a living do so amid a host of challenges.
This beautiful 24×36 inch poster, suitable for framing, features
a map of the San Joaquin River. The map text focuses on the San
Joaquin River Restoration Program, which aims to restore flows
and populations of Chinook salmon to the river below Friant Dam
to its confluence with the Merced River. The text discusses the
history of the program, its goals and ongoing challenges with
implementation.
As the single largest water-consuming industry, agriculture has
become a focal point for efforts to promote water conservation.
In turn, discussions about agricultural water use often become
polarized.
With this in mind, the drive for water use
efficiency has become institutionalized in agriculture
through numerous federal, state and local programs.
