The transit agency has released photos on Saturday showing workers draining two of the seven tunnels beneath the East River that have been flooded in the aftermath of Hurricane Sandy.
The Cranberry Street Tunnel carries the A and C trains between Brooklyn and Manhattan, and the 53rd Street Tunnel carries the E and M trains between Queens and Manhattan.
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Flooded: New York City MTA workers used a special Pump Train to pump water out of the flooded Cranberry Street tunnel which carries the A and C trains between Brooklyn and Manhattan
Hard at work: These images were released by the MTA today as many of the subway lines are preparing to re-open for the first time since Sandy
How deep? An MTA worker measures the depth of water using a ruler while keeping balance in the Cranberry St tunnel
Video footage from MTA shows stagnant water at the bottom of the station's escalator
South Ferry subway station, which would normally be bustling, is unrecognisable as it lies largely underwater in the video footage
Debris floats in the flood water and dirt can be seen splashed up the walls of the station
Workers have begun pumping the water out of the subway system as New York seeks to return to normality following the devastation wreaked by Hurricane Sandy
This picture shows just how deep the flood water inside South Ferry Station is with most of the doors here fully submerged
The station will need a thorough clean up after the water has been pumped out, with dirt and leaves littering the floor
Foliage from a tree is among the debris left behind by floods caused by Hurricane Sandy
The video shows that the subway has been left badly damaged even after the floodwater has been pumped out
As this picture shows, ironically the flooded station exits onto Water Street
Workers wade through the water as they begin the arduous task of clearing up the station
A giant pipeline snakes down the station's escalator into the floodwater
Ticket machines in the station can be seen partially submerged here
Even after the water has been drained, the station is still a wreck
New York Governor Andrew Cuomo said Saturday that 80 per cent of service in the MTA subway system already has been restored, including critical under-river connections between Lower Manhattan and Brooklyn, the Wall Street Journal reported.
Trains on the 4 and 5 lines were running through pumped-out tunnels under the East River into Brooklyn, and the No 7 line is running from Midtown into Queens, Cuomo said in a press briefing.
The 6 train, which runs from the Brooklyn Bridge up Lexington Avenue in Manhattan and into the Bronx, is also back on line.
MTA Chairman Joseph Lhota said that five off the seven flooded tunnels under the East River have been drained, but much work still remains to be done.
The 14th Street tube, which carries the L train into Williamsburg, is still inundated ‘from wall to wall and floor to ceiling.’
The superstrom that has left 109 dead and plunged 60 million people into darkness on Monday, sent torrents of water into the New York City’s massive subway system that serves 5.5 million riders daily, paralyzing mass transit for days.
All wet: Workers pump water out of a flooded A Line subway tunnel near Dykman Street in New York City
Hard work: MTA employees load water hoses onto a Pump Train in the 53rd Street Tunnel, which carries the E and M trains between Queens and Manhattan
Restoration: Today's subway lines show the 4 and 5 trains added to the list of lines running, E and M service was added yesterday
Trains stopped running at 7pm last Sunday as the MTA preemptively closed down service for only the second time in its history in an effort to secure the system, but that did little to prevent massive damage.
All seven tunnels carrying trains between Manhattan, Brooklyn and Queens were initially submerged, marking the worst’s disaster in the subway’s 108-year history.
The long, labor-intensive process of ridding the underground arteries off water requires hundreds of pumps, including ones powerful enough to empty an Olympic-sized pool in less than 15 minutes, as well as help from the U.S. Army Corp of Engineers' special SWAT Team.
We're pumped! Workers pumping water out of a flooded A Line subway tunnel near Dykman Street in New York City
Not done yet: Work continues around the South Ferry Subway as vast amounts of water is pumped out of the Station in Battery Park on Friday
Closed: South Ferry station remains closed indefinitely as workers struggle to repair the damage left from Sandy
Massive queues: Because of limited service, New Yorkers are forced to take shuttles; here, lines form outside of Grand Central on November 2
Workers pictured attempting to get the New York subway system back on track
This stretch looks more like a sewer system than a subway, with the track entirely submerged under floodwater
Maintenance workers can be seen making their way down the tunnel as they continue to pump floodwater from the subway
The long process of ridding the underground arteries off water requires hundreds of pumps, including ones powerful enough to empty an Olympic-sized pool in less than 15 minutes
Each subway tunnel would require four pumps that could remove 1,000-1,500 gallons per minute, a 2011 New York City report estimated
All seven tunnels carrying trains between Manhattan, Brooklyn and Queens were initially submerged
Workers eventually manage to drain this stretch
The subway looks as good as new once maintenance teams have pumped it dry
Teams of maintenance men certainly had their work cut out
This worker is seen measuring just how deep the floodwater in the subway is
A close up of the worker's yardstick shows the depth of the water
The size of the pumps needed to drain the subway is shown in this picture
The Army’s water-removal team consisting of more than a dozen experts has been using 12 eight-inch pumps and 13 six-inch pumps shipped from New Orleans.
Once bigger pumps arrive, the MTA chairman said it won’t take much time to drain the tunnels. Until then, the job is slow-going.
Each subway tunnel would require four pumps that could remove 1,000-1,500 gallons per minute, a 2011 New York City report estimated. At that rate, about 7.2 million gallons per day, per tunnel could be drained, although it remains unknown exactly how long it would take to drain all of the water.