Farmed Out: Overpumping Threatens to Deplete U.S. High Plains
Groundwater
September 17, 2013
Story at-a-glance
In the next 50 years, research suggests 70 percent of the High
Plains Aquifer System in the Midwestern US may be depleted
Water-intensive cattle and corn crops account for the majority
of water usage in the US, and the High Plains Aquifer supplies
30 percent of US irrigated groundwater
Once the aquifer is depleted, it would take an average of 500 to
1,300 years to completely refill; farmers would need to reduce
their pumping of the aquifer by 80 percent for it to be
replenished naturally by rainfall
The adoption of more sustainable agricultural practices,
including a return to grass-fed cattle, will be necessary to
protect water supplies for future generations
By Dr. Mercola
In the US Midwest, corn and cattle are kings, but both
require large amounts of water to be sustained. Not only is corn
a water-intensive crop, but cattle raised on concentrated animal
feeding operations (CAFOs) are fed mostly corn.
This double blow to water supplies in the region has led to
the rapid depletion of one of the most important water sources
to Midwestern farmers – the High Plains Aquifer System.
It is this extensive underground aquifer that allowed farmers
to grow crops in what was previously known as ‘the Great
American Desert.’ It was also in this area where the rush to
clear out the area’s natural grasslands and replace them with
plowed soil lead to one of the
greatest man-made ecological disasters of all time.
Following a decades-long drought in the 1930s, farmers began
to use groundwater pumping and sprinkler irrigation to grow corn
and wheat in what is now more commonly known as the US ‘dust
bowl,’ using the vast aquifer freely.
Now, however, the draw has proved to be too intense and this
once seemingly inexhaustible source of groundwater is quickly
being depleted.
70% of the Water Could Be Gone in the Next 50 Years
Farmers in the region who hope to pass their farms on to the
next generation had better do some quick thinking, because if
the water drain continues new research suggests that nearly 70
percent of the aquifer could be depleted in the next 50 years.1
According to the study, by 1960 farmers had already used up 3
percent of the aquifer’s water and by 2010 that rose to 30
percent. By 2060, it’s estimated that another 39 percent of the
water will be gone… and this is even taking anticipated
irrigation technology improvements into account.
While it’s thought that farmers might be able to pump less
water in the coming decades due to newer irrigation technology,
corn crops and cattle CAFOs are expected to increase,
which will likely negate any of the potential water
savings.
The researchers stated:
“Significant declines in the region's pumping rates
will occur over the next 15-20 y given current trends, yet
irrigated agricultural production might increase through
2040 because of projected increases in water use
efficiencies in corn production.
Water use reductions of 20% today would cut
agricultural production to the levels of 15-20 y ago, the
time of peak agricultural production would extend to the
2070s, and production beyond 2070 would significantly exceed
that projected without reduced pumping.”
It Could Take 1,300 Years to Refill This Aquifer
Tapping this groundwater source for agricultural production
is clearly not a sustainable option at today’s usage rates.
Cattle and corn crops account for the majority of water usage in
the US, and the High Plains Aquifer supplies 30 percent of US
irrigated groundwater.
It is, in fact, because of this ‘guaranteed’ water supply
that Kansas is able to claim some of the highest market value
for agriculture in the US. Yet, once the aquifer is depleted, it
will be gone for the foreseeable future, as it’s estimated it
would take an average of 500 to 1,300 years to completely
refill.
The script hasn’t been set in stone yet, however, as if
farmers reduce their pumping of the aquifer by about 80 percent,
it would be able to be replenished naturally via rainfall.
But in the Dust Bowl, growing two of the most water-intensive
crops that exist, this is unlikely to happen unless major
agricultural reform takes place. Cornell University professor of
crop and soil sciences Harold Mathijs van Es told Scientific
American:2
“We need to think about what’s being grown here and
how we’re growing it. This is the Dust Bowl we’re talking
about.”
Are We Farming Our Way to Environmental Disaster?
Many farmers in the Plains states rely on irrigation from the
High Plains Aquifer to water their crops in times of drought,
but what will happen if this water reserve runs out? We could
once again be brewing a dust storm of epic proportions, and this
is only one of the potential scenarios…
There are many other warning signs that the poor farming
practices being used today could backfire in the form of major
environmental disasters as well.
Soil is actually depleting 13% faster than it can be
replaced, and we’ve lost 75% of the world's crop varieties
in just the last 100 years. Over a billion
people in the world have
no access to safe drinking water, while 80% of the world’s
fresh water supply is used for agriculture. This situation is
simply not sustainable for much longer. Yet, as the study’s
researchers said, very poignantly and succinctly:
“Society has an opportunity now to make changes with
tremendous implications for future sustainability and
livability.”
A Return to Grass-Fed Cattle May Dramatically Lessen Water
Demands
The Plains were once an area of natural grasslands… and grass
is the natural diet of cows. By moving away from water-intensive
crops like corn, and dramatically increasing the number of
grazing livestock, experts such as Allan Savory believe we could
not only stop rising trends toward desertification, but also
reverse it.
Savory has developed a holistic management and planned
grazing system that is now being implemented in select areas on
five continents. In one area, increasing grazing cattle numbers
by 400 percent, planning the grazing to mimic nature, and
integrating the cattle with local elephants, buffalo and
giraffes, has achieved remarkable results. I encourage you to
view the remarkable video because seeing is believing.
Earlier this year, I attended the first Savory Institute
Conference in Boulder, Colorado and had a chance to meet and
talk with Allan. He is an inspiring and passionate man and has
developed the strategy of holistic herd management. This could
go a long way towards reversing the trend of increasing deserts
across the world, which is radically limiting the soil’s
capacity to absorb water and also take carbon from the air in
the form of carbon dioxide and put it back into the soil.
In the US, where monocultures like corn and soy — much of
which are genetically engineered — are rapidly overtaking native
grasslands, a return to smaller-scale agriculture, complete with
grazing herds, may be necessary for creating a more sustainable
food system. Following Savory’s strategy, large herds could be
moved across areas in planned grazing patterns, which would be
beneficial for the environment, including water usage, the
health of the animals, and subsequently the health of humans
consuming those animals.
Are We Heading Into a Global Water Crisis?
It’s not only the Plains states that are in danger of running
aquifers dry and depleting available water sources. The average
American uses 150 gallons of water every day, yet those in
developing countries can scarcely find five gallons. Of the
seven billion people on Earth, 1.1 billion don’t have access to
safe, clean drinking water.3
Traditionally, governments have delivered water to the public
as a service. But over the last decade, with growing economic
pressures and water shortages, water is turning into a commodity
to be bought and sold. A few large multinational corporations
have begun delivering water on a “for profit” basis and making
big money, as a result. Water comprises most of the human body
by weight and its regular consumption is necessary for survival,
so whoever “owns” the water owns you. Could nations soon be
fighting over clean water in the same way they’ve spent decades
dueling over fossil fuel? Many scientists say this is
exactly where we are heading, and soon – not in the distant
future.
Most people don’t realize that only 10 percent of the world’s
fresh water supply is used for homes. The remaining 80 percent
is used by agriculture (70 percent) and industry (20 percent).
So if change is going to occur to protect existing groundwater
supplies, it’s got to involve
agricultural practices.
Yet, on an even broader scale there is a petition proposing
the addition of one more article to the 30-article Universal
Declaration of Human Rights,4
and they need your signature. In 1948, the 30 articles of the
Universal Declaration of Human Rights were ratified by all the
nations of the world. These 30 articles guaranteed a broad sweep
of human rights across many human endeavors, from life to
liberty to freedom of thought. Now, 60 years later, recognizing
that over a billion people across the planet lack access to
clean and potable water and that millions die each year as a
result, it is time to add one more article to this historic
declaration.
Article 31, the Right to Water, states:
“Everyone has the right to clean accessible water,
adequate for the health and well-being of the individual and
family, and no one shall be deprived of such access of
quality of water due to individual economic circumstance.”
Please consider
signing the
petition for this important measure. If you’re interested in
more information about water,
we have an entire section of our website devoted to it, and you
can also view the documentary Flow, below.