When New York City’s Croton Water Filtration Plant goes online in 2012, it will filter about 10 percent of the Big Apple’s drinking water.
Shown here is a small portion of the 8,000-foot-long water tunnel that will connect the filtration plant with the aqueduct that that delivers water from more than 60 miles away. The tunnel itself was bored out by a special machine that cut a 13-foot circumference hole in the bedrock. Metal piping now lines the face of the rock, reducing the circumference to its final size of 9 feet.
For more information and more photos, visit www.governing.com.
Photo by David Kidd.