You have to, for example, continue to build the third water tunnel.

The segment of the 14-foot-diameter water tunnel that is now going into service was essentially finished in 1993.

But those clustered at the mouth of the water tunnel were unmarked.

The first segment of the new water tunnel went into operation a few months later.

Officials could also delay building the later phases of a third water tunnel from upstate, he said.

A $5 billion water tunnel stretching 64 miles: they said it couldn't be done.

They also went to a water tunnel which had large pipes running through it.

It could visit the third water tunnel, not yet finished 35 years after work began.

I came into the city through the water tunnels.

The first major addition to the city's water system in 50 years is almost complete - a new $1 billion water tunnel.