
Today, March 22nd, is recognized by the United Nations Water Group as "World Water Day", this year's theme being "Clean Water for a Healthy World". Although we live on a water-covered planet, only 1% of the world's water is available for human use, the rest locked away in oceans, ice, and the atmosphere.
The National Geographic Society feels so strongly about the issues around fresh water that they are distributing an
interactive version of their April, 2010 magazine for download - free until April 2nd - and will be exhibiting images from the series at the
Annenberg Space for photography. National Geographic was also kind enough to share 15 of their images below, in a collection with other photos from news agencies and NASA - all of water, here at home - Earth. (
43 photos total)

The Maya believed natural wells, such as the Xkeken cenote in Mexico's Yucatan, led to the underworld. (John Stanmeyer, VII, © National Geographic)
2 A cross hewn for Epiphany in the ice of Maine's Kennebec River by parishioners of St. Alexander Nevsky Russian Orthodox Church commemorates the baptism of Christ. The water from the carving will bless the church. (John Stanmeyer, VII, © National Geographic)
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3 India's holiest river, the Ganges, is scribbled with light from floating oil lamps during the Ganga Dussehra festival in Haridwar. Hindus near death often bathe in the river; some are later cremated beside it and have their ashes scattered on its waters. (John Stanmeyer, VII, © National Geographic)
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4 Jared Otieno, a worker with the Kenyan Ministry of environment and mineral resources, sprinkles water cupped in his hand as he and other workers who helped clean two-and-a-half miles of the Nairobi river basin in Nairobi greet foreign United Nations visitors to the river basin site on March 21, 2010. (ROBERTO SCHMIDT/AFP/Getty Images)
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5 A photograph of sunlight reflected by waterways across the central United States, as seen from the International Space Station in November of 2003. The scene looks southwest from above Lake Michigan across the Illinois and Mississippi Rivers, towards Texas near the horizon. At least two of the smaller lakes at bottom, near the Illinois River, are cooling ponds for nuclear power stations. (NASA/JSC)
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6 Floating on dreams and whispers, girls from a West Bank village cool off in the salt-laden waters of the Dead Sea. With its main tributary, the Jordan, at less than a tenth of its former volume, the inland sea has dropped some 70 feet since 1978. (Paolo Pellegrin, Magnum © National Geographic)
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7 After six years of drought, measuring sticks are useless at the Ziglab Dam in Jordan, built to catch water flowing west into the Jordan River for irrigation. Its reservoir has shrunk to a fifth of capacity and hasn't filled since 2003, forcing Jordan to ration water. (Paolo Pellegrin, Magnum © National Geographic)
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8 A man swims in a pool inside a condominium in Singapore March 21, 2010. (REUTERS/Nicky Loh)
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9 A boy swims in the murky waters of Manila Bay March 21, 2010. (REUTERS/Cheryl Ravelo)
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10 Mount Everest's East Rongbuk Glacier has lost some 350 vertical feet of ice between August 1921 and October 2008. (David Breashears, © National Geographic)
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11 In Iceland the bountiful Kolgrima River inscribes the earth on its seaward path. (Hans Strand, © National Geographic)
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12 A swan swims at Lake Toepper (Toeppersee) in the western German city of Duisburg on March 11, 2010. (Jens Schlueter/AFP/Getty Images)
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13 Balancing on a slippery makeshift ladder, women pass precious gallons hand to hand up a well nine people deep in the Marsabit region of northern Kenya. After the water reaches the surface, the women will compete for it with thirsty livestock. (Lynn Johnson, © National Geographic)
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14 Gabra women in northern Kenya spend up to five hours a day carrying heavy jerry cans filled with murky water. A lingering drought has pushed this already arid region to a water crisis. (Lynn Johnson, © National Geographic)
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15 Homes are surrounded by flood waters from the swollen Red River, Sunday, March 21, 2010, south of Fargo, North Dakota. The river crested at Fargo today at about 37 feet, nearly four feet short of last year's record crest of nearly 41 feet. (AP Photo/M. Spencer Green)
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16 Flood water drains from a ditch along Interstate 29 March 21, 2010 south of Fargo, North Dakota. (Scott Olson/Getty Images)
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17 At up to six feet long, the Chinese giant salamander is the world's largest. It secretes a slippery, foul-smelling mucus when harassed, but that doesn't keep people from eating it and using it in folk medicines. (Joel Sartore, © National Geographic)
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18 Tracking the return of a native species to Tennessee's Abrams Creek, snorkeling scientists search under flat rocks for the smoky madtom - a two-inch catfish. (Joel Sartore, © National Geographic)
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19 Upsala Glacier as seen from the International Space Station in February of 2010. Upsala is a large valley glacier in Argentina's Los Glaciares National Park.
Google Map. (NASA/JSC)
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20 Villagers and donkeys near Marsabit, Kenya, lean into a trough at the top of a "singing well" - so called because the people who form bucket brigades to bring the water up from deep underground sing as they work. Each visitor is allowed to fill only one large jerry can a day - and the women usually have to wait until after the animals have drunk their fill. (Lynn Johnson © National Geographic)
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21 This photo released on February 26, 2010 from the Australian Antarctic Division shows the the Mertz Glacier Tongue, a 160-kilometer spit of floating ice protruding into the Southern Ocean from East Antarctica, in 2007. Researchers said on February 25, 2010 that the iceberg the size of Luxembourg - or some 2,550 square kilometres (985 square miles) in size - knocked loose from the Antarctic continent earlier this month and could disrupt the ocean currents driving weather patterns around the globe. (B. LEGRESY/AFP/Getty Images)
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