Tepco had been pumping water to raise the level in the No. 2 reactor.
But robbers are getting more sophisticated, sometimes pumping water back into the pipes to fool pressure sensors.
Pumping water out of flooded tunnels would take anywhere from 14 hours to four days, MTA officials said.
Fracking is a technique involving pumping water and chemicals into shale rock at high pressure to extract gas.
BBC: Lancashire's shale gas estimated at ?136bn by Cuadrilla
Fracking is a controversial process that involves pumping water and chemicals into shale rock at high pressure to extract gas.
As I walked I saw apartment buildings pumping water out of basements and garages with loads of cars mostly submerged in floorwater.
Staffordshire Fire Service said it was pumping water from the A34 into a nearby culvert on the advice of the Environment Agency.
Fracking is a technique of shale gas extraction that involves pumping water and chemicals into shale rock at high pressure to extract gas.
Specially formulated lubricants are used in fracking, which involves pumping water, fine sand and fracking fluids underground to split open oil- and gas-bearing rocks.
"The California Department of Water Resources will interrupt pumping water from Northern California to Southern California, which will have no effect on the water supply, " said Brown.
CNN: California briefly declares Stage Three power emergency
"We are only running power for emergency supplies, such as pumping water out, and have stopped producing at all mines, " AngloGold spokesman Steve Lenahan told Reuters news agency.
The process involves pumping water containing small percentages of other materials into the porous shale under pressure to hydraulically fracture it and release the trapped oil and gas.
FORBES: Promised Land's Fracking Fictions: OPEC Goes Hollywood With Crocudrama
The news is reminiscent of the discovery made in Switzerland a couple of years back that pumping water deep into hot rocks to extract geothermal energy can also cause earthquakes.
They had been protesting at a site in Hesketh Bank operated by energy firm Cuadrilla which was given a licence in 2008 to extract gas by pumping water, sand and chemicals into shale rock at pressure.
BBC: Hesketh Bank fracking rig protesters guilty of trespass
Gordon Brown, operations manager of California Independent System Operator, the state agency that oversees the power grid, told CNN Thursday night that the declaration triggered contingency plans to stop pumping water for two hours, during the state's critical power usage hour between 5:30 p.m. and 6:30 p.m.
CNN: California briefly declares Stage Three power emergency
In places like Syria and southern Iraq that are now being dried out by the Turkish dams, irrigation is primitive - often involving nothing more than water trucks pumping water out of the Euphrates and driving it over to fields that are often less than a kilometer away.
The outage also affected a water pumping station causing problems with water supplies south west of Alton.
Subsidised power encourages relentless pumping of water, so water-intensive crops are grown in drought-prone areas, diminishing water tables.
ECONOMIST: India's economic reforms: Can India work? - India's economic reforms | The
In Oxfordshire, council workers have been busy pumping flood water out of drains and putting temporary flood defences in place.
Think of all the energy expended in pumping that water, treating it, spraying it on crops, heating it for your shower, making it into ice, Coca-Cola, paper, and on and on.
Other ideas include drilling into the aquifer beneath the city and pumping cool water along the tunnels (a method already used to cool the Royal Festival Hall), or installing chillers in the trains that would freeze blocks of ice while the trains were above ground which would then keep them frosty on the underground sections.
The EU is committed to many different storage systems: flywheels, batteries, water pumping, etc.
Crews have been pumping out surface water overnight in four areas to prevent further flooding.
On his first day on the job, he inspected water pumping stations in parts of Bangkok most vulnerable to flooding.
Torbay Council said initial samples taken by the Environment Agency after the sewage pumping showed bathing water quality had not been affected.
BBC: Torbay sewage pumping 'not affecting beach water quality'
But Mr Steele-Perkins said SLP would give land to South West Water which he said will allow it to expand the capacity of its foul water pumping station.
It took a full week of pumping before the water level was brought down to 20 centimeters, and Speth, wearing boots, shorts and an old T-shirt, could splash down to explore.
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