Thousands of miles of pipelines run over the Ogallala aquifer, which cannot be replaced or cleaned-up.
About 2 billion people worldwide depend on groundwater supplies, which include 273 transboundary aquifer systems.
In the United States, the biggest source of potable water is the Ogallala Aquifer.
The aquifer provides drinking water for much of the state and is important for Nebraska's agricultural economy.
The rankings are based on long-term indicators like aquifer levels, precipitation patterns and historic balance of supply and demand.
Its culmination, perhaps, is the insane Libyan scheme to drain the last Saharan aquifer for its extravagant coastal cities.
Oil is also produced on top of the Ogallala Aquifer in other states.
Water had to be found, and is to be piped from an underground aquifer over 50km (32 miles) away.
Finally, it proposes a progressive, multi-pronged approach for implementing the concerted, equitable and sustainable management of transboundary aquifer systems.
During a 4 months period, geological and hydrogeological data on the giant Guaran Aquifer System were critically revised and compiled.
Since fracking has become more prevalent in Pennsylvania and the West, environmentalists have focused on the possibility of aquifer contamination.
This story, with its cast of dams, river diversions, aquifer depletion and lake drainage, makes water a huge matter of concern.
Chevron determined the best place would be the Dupuy Formation, a geologic layer a mile beneath Barrow that contains a saline aquifer.
Be it a transboundary river basin or aquifer, or a water pump built for a rural village, examples of cooperation apparently abound.
An aquifer in Nebraska provides drinking water for much of the state.
The lack of effective governance is cited as one of the main causes of groundwater depletion, aquifer pollution and possibly inequitable allocation.
Where once it had recycled mountain rain into a vast aquifer underneath, its hard bottom now ushers occasional floodwater right out to sea.
Projects are being challenged in Minnesota, Iowa, Nebraska, Kansas and in central Illinois, where eight ethanol facilities are situated over the Mahomet aquifer.
In return, an Arizona water-user (say, the city of Tucson) pumps the same amount of Nevada's water out of the aquifer under Arizona.
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Situated on the border with Angola, Namibia's side of the 10, 000-year-old aquifer covers an area about 70km by 40km (43 miles by 25 miles).
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Poison in the Vadose Zone: An examination of the threats to the Snake River Plain aquifer from the Idaho National Engineering and Environmental Laboratory.
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Groundwater response to global changes is a complex function that depends on climate change and variability, topography, aquifer characteristics, vegetation dynamics, and human activities.
In Colorado's San Juan basin, for example, the water is saline and must be reinjected into wells a safe distance away from any aquifer.
Chevron spokesman Kurt Glaubitz insists no similarly suitable aquifer exists onshore.
New collected water samples from wells, tapping the aquifer on Argentinan and Uruguayan territory, were analysed on their main chemical parameters and compared with older data.
Now he points out that all the wells are metered, and, although the pressure has not returned to past levels, the Roswell aquifer is no longer over-used.
Cook's concern is that the proposed desalted water will be piped to drier southern Orange County where the aquifer isn't as large and where development is booming.
Phase II, planned for 2011, will identify both aquifers down to 3, 000 meters below the surface, study soil composition and aquifer replenishment, and prioritize areas for agricultural development.
Elevated fluoride contents in wells tapping the Argentinan part of the aquifer probably originate from the sandy deposits of the Solar Formation intercalated in the Cretaceous Serra Geral basalts.
The proposed pipeline, which would carry 800, 000 barrels of oil each day from Alberta to Texas, would have passed through a major aquifer in the Sandhills region of Nebraska.
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