Newspaper excerpt on East Coast drought conditions, undated

z .ByANDREWC.REVKIN z o • o i East; Coast, drought has shriveled streams as never before. But tucked _k

o Fl in the woods TO miles^ north of New "□

Science Tinies C o CT o York City, a deep pool of clear water cn spins Into a sparkling brock that o' ro TUESDAY, MARCH 12, 2002 ■ runs downhill to the Hudson River. "0 o o o 1 a. Slje york Simes No matter tew dry gauges measure a flow of fter mfl- 9L O A Vttal Link JlNWHnXAL^J Ute ^ sht miUion gallons a day. o No one is thriUed, however. o c

21st-Century Plumbing 'I Xi i \ X3rjsaRa,..v\“';s Ite sinkhole and half a dozen oth­ er springs and wet spots nearby are fed by leaks 600 feet underground in 3 CD 3

ssasasss's^: one of the most Important water tun-

For a Leaky Old Aqueduct MAJOR FAiaJS ROSETWt POWER plant =. SINKHOLE . nels in the world, the 85-mile Dela­ ware Aqueduct This 57-year-old tunnel carries, on SPmNQ average, half of New York Chy’s \ dally supply of a billion-plus gallons of water from reservoirs along the ACMJECMICT Delaware River where it rises in the Catskill Mountains. It also supplies RBNFORCEO- LHffiR this town and many others along its route to the city. At certain times of the year. Ute ^1 tunnel carries 90 percent erf the wa­ *^'*“** 2vvt X. I—-f J \/A^\ fs; M ter for the nine million people served by fee sprawling tO-reservoir water syst^Twhich has loagbeen consid­ ered an engineering marvel of the ■REINFORCING RODS industrial era When the tunnel Is at full capacity, about 36 million gaUons a day escape through uncharted breaks in the con­ iP STEEL LINER crete and steel lining, engineers fin-

3 M |^«ERW«/^ Reinforced, But Perhaps Not Enough fee city say. That might not seem much in a bUlion-gallon-a-day sys­ tem. but the leak equals the total dally water usage of Rochester. Engineers knew they had to strengthen portions of STROB^ the tunnel that were Ate with New York City and sur- punched through weak, rowK^conimunitlefrpreparii«fe A fractured limestone. But aact drought emergencies in com- leaks have sprouted in or tog weeks reqtflring strict water con­ near two of these sections. A submarine servation, fixing the leak has taken suorjiAWWE; equipped with cameras ORMVINQS will try to find their source. officials say feat inspections and re­ I ARESCKStlArC pairs could take several years. NewVtrti proecUQO The aqueduct under construction in 1942. “It’s particularly true to a drought, but yiHi hate to see that kite 1 jobW ABOVE SEA LEm A Tiny Sub's Journey PtSHKlLL of water lost at say time, given what MTNS. ------SUBMARINE .A 400pound self-guided craft is being built to inspect The submarine will travel about 16 < ■^M ijiBosT^^ the tunnel. This fall, it will examine all 45 miles of the hours before it is plucked from the RETRIEVED HERE wart into building that aqueduct end ......... •t ;*w5Tife«*sgi«i • • lining, taking 360-degree pictures every six feet. wdetecting changes in water pressure and listening for the sound of leaks.

•■'*r UAOSOfK) U7N. tunnel by a tethered robot, which will be lowered through Shaft B. SHAFT fee reservoirs,” said Diane Galusha, who chronicles the deathsof 79 work- ers during construction of fee Dela­ ware tunnel in her book "MitttteAs­ I- HUDSON sets: A History of New York City’s fwsn Water System” (Purple Mountain M Press, 1999). The leaks were first noted by city w»iMw»awii!sa^ Betoware Aqueduct -- M

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