Global Water Crisis, U.S. Eyes Canada's Great Lakes
19
October, 2012
The
number of people living in areas affected by severe water stress is
expected to increase to almost four billion people...
OECD
Environmental Outlook to 2030
The
Stockholm International Water Institute has kindly provided some
statistics we should all be aware of:
- The 10 largest water users (in volume) are India, China, the United States, Pakistan, Japan, Thailand, Indonesia, Bangladesh, Mexico and the Russian Federation.
- With rapid population growth, water withdrawals have tripled over the last 50 years. According to the United Nations Department of Economic and Social Affairs (UNDESA), the world population is predicted to grow from 6.9 billion in 2010 to 8.3 billion in 2030 and to 9.1 billion in 2050. At the same time, urban populations are projected to increase by 2.9 billion, to 6.3 billion by 2050. An estimated 90% of the people expected to be added to the population, by 2050, will be in developing countries, many in regions already in water stress where the current population does not have sustainable access to safe drinking water and adequate sanitation
- Water withdrawals are predicted to increase by 50% by 2025 in developing countries, and by 18% in developed countries
- Water for irrigation and food production constitutes one of the greatest pressures on freshwater resources. Agriculture accounts for around 70% of global freshwater withdrawals, even up to 90% in some fast-growing economies
- Feeding everyone in 2050 could require 50% more water than is needed now
- The dietary shift from predominantly starch-based food to meat and dairy, which require more water, is the greatest to impact on water consumption over the past 30 years. Producing one kg of rice requires approximately 3,500 liters of water while one kg of beef requires 15,000 liters. Producing that one kg of meat requires as much water as an average domestic household uses over ten months (50l/person/day)
- Estimates indicate that there will not be enough water available on current croplands to produce food for the expected population in 2050 if we follow current trends and changes towards diets common in Western nations (3,000 kcal produced per capita, including 20 percent of calories produced coming from animal proteins)
- Northwest India
- Northeastern China
- Northeast Pakistan
- California's central valley
- Midwestern United States
In
North America the major concern is over water levels in the Ogallala
aquifer under the U.S. Great Plains. The Ogallala is the world's
largest known aquifer having an approximate area of 450,600 square
kilometers and stretches from southern South Dakota through parts of
Nebraska, Wyoming, Colorado, Kansas, Oklahoma, New Mexico, and
northern Texas.
The
Ogallala Aquifer was formed roughly 10 million years ago when water
flowed onto the plains from retreating glaciers and streams of the
Rocky Mountains. The Ogallala is no longer being recharged by the
Rockies and precipitation in the region is only 30-60 cm per year.
In
three leading grain producing states - Texas, Oklahoma, and Kansas -
the underground water table has dropped by more than 30 meters.
Consider
also:
- In some areas the water table under the San Joaquin Valley in California has dropped nearly 10 meters
- Over use of underground water supplies in California’s Central Valley has resulted in the loss of over 40 percent of the storage capacity in all the human constructed reservoirs in California
- The huge sandstone aquifer underlying the Illinois-Wisconsin border, which supplies Chicago and Milwaukee with water, is currently overtaxed and may be depleted in the near future
- The US uses so much of the water out of some of their river systems that nothing reaches the river's destination - no water reaches the mouth of the Colorado River, the Ococee River in the Southeastern United States has a large stretch of the river dry on certain days, Nebraska's Platte River is drying up and so is the not so mighty anymore Mississippi
- The U.S. Bureau of Reclamation is forecasting next year as water-short for irrigators in the Republican River basin
Climate
change is causing the Earth to warm, precipitation is shifting from
the mid-latitudes to the low and high latitudes - wet areas are
becoming wetter and dry areas drier. Less rainfall in the
mid-latitudes means less new water to refill the aquifers that are
being depleted the fastest.
Streams, rivers and lakes are almost always closely connected with an aquifer. The depletion of aquifers doesn’t allow these surface waters to be recharged - lowering water levels in aquifers is being reflected in reduced amounts of water flowing at the surface.
Here’s
the bad news in a headline - The
US is Running Out of Freshwater
The
Environmental Protection Agency (EPA) says at least 36 states are
anticipating local, regional, or statewide water shortages by 2013,
even under non-drought conditions.
“The worst drought in more than half a century baked more than two thirds of the continental United States this summer (2012) and its harsh effects continue to plague the parched cities and towns of the Great Plains.
Ask the 94,000 people of San Angelo, Texas, who are running out of water. Fast.
The city -- once known as "the oasis" of dry west Texas -- now says it only has enough water supplies to last one more year. On Oct. 16, it will enforce its highest level of emergency measures to save its water supply.
That first-ever "Drought Level III" declaration will ban any watering of lawns, golf courses and gardens, forbid fresh water use for swimming pools and close commercial car washes.
The city will also push up usage fees aiming to cut water use by at least 30 percent as it awaits a new water pipeline now under construction. The pipeline will not be available for use until mid-2013 or later.” Carey Gillam REUTERS
The
city of San Angelo gets its water from the 58 billion gallon, when
full, Twin Buttes Reservoir or the O.H. Ivie Reservoir. Twin Buttes
is at 2.5 percent capacity and the O.H. is expected to run out of
water in 2013. An extreme case? Perhaps, but water shortages are real
and the effects are devastating – if you haven’t got water you’ve
got nothing.
There
have been numerous proposals about transferring large amounts of
freshwater from Canada to the United States. Following are breakdowns
on three of the most ambitious plans conceived to date.
The Great
Recycling and Northern Development (GRAND) Canal of North
America(GCNA) was designed by Newfoundland engineer Thomas Kierans to alleviate North America’s freshwater shortage problems. As Kierans originally conceived it, the GRAND Canal plans called for the damming and rerouting of northern river systems in Quebec in order to bring freshwater down into the Great Lakes where the water could then be pumped into the American Midwest and the U.S. Sun Belt.
America(GCNA) was designed by Newfoundland engineer Thomas Kierans to alleviate North America’s freshwater shortage problems. As Kierans originally conceived it, the GRAND Canal plans called for the damming and rerouting of northern river systems in Quebec in order to bring freshwater down into the Great Lakes where the water could then be pumped into the American Midwest and the U.S. Sun Belt.
Fresh
water run-off from natural precipitation would be collected in James
Bay by means of a series of outflow-only, sea level dikes-constructed
across the northern end of James Bay. These dikes would capture the
fresh water before it mixes with the salty water of Hudson Bay and
create a new source of fresh water equivalent to 2.5 times the flow
over Niagara Falls.
The North
American Water and Power Alliance (NAWPA)
was designed to bring water from Alaska and northern British Columbia
to the U.S. By building a series of large dams, the northward flow of
the Yukon, Peace, Liard, Tanana, Copper, Skeena, Bella Coola, Dean,
Chilcotin, and Fraser rivers would be reversed to move southward into
the Rocky Mountain Trench where the water would be trapped in a giant
reservoir approximately 800 kilometers long.
A
canal would then be built to take the water southward into Washington
state where it would be channeled through existing canals and
pipelines. The annual volume of water to be diverted through the
NAWAPA project is estimated to be roughly equivalent to the average
total yearly discharge of the entire St. Lawrence River system in
Canada. The amount of water available is estimated to be enough that
some would be available for use by Mexico via the Colorado River.
The
Central North American Water Project (CeNAWAP) consists
of a series of canals and pumping stations linking Great Bear Lake
and Great Slave Lake in the NWT to Lake Athabaska and lake Winnipeg
and then the Great Lakes.
A
variation on the CeNAWAP is the Kuiper Diversion Scheme which links
the major western rivers, the Mackenzie, the Peace, the Athabasca,
North Saskatchewan, Nelson and Churchill rivers, into a mega water
diversion scheme.
Conclusion
The
principal’s of these three water diversion projects are the same,
except on a much grander scale, as that of the 1930s Tennessee Valley
Authority or the 1950s St. Lawrence Seaway. Between them, they could
supply hundreds of billions of gallons of fresh water to the parched
areas of the United States, Canada, and Mexico. New areas of
cultivation would be opened up, thousands of jobs would be created
and new dams would supply unimaginable amounts of electricity.
Mark
Twain said "Whisky
is for drinking; water is for fighting over."
Of
course he also said, "I've
seen a heap of trouble in my life and most of it never came to pass."
Fortunately
water seems to stimulate cooperation rather than promote conflict
between nations.
The
issue of Canada diverting part of its fresh water resources to the US
has never been on, or has long since faded off most Canadians radar
screens, but the country with the world’s largest economy is also
the world’s largest producer of corn, soybeans, and wheat. The US
accounts for one in every three tons of the grains traded globally -
the United States is literally the world’s bread basket.
Climate
change (science says the
Earth is going to continue warm
and that the warming is not manmade) is going to put Canadian water
back on every North American’s radar screen. Is water on your radar
screen?
If
not, maybe they should be.
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