Texas Plans a Texas-Sized Response to Rising Seas
In Galveston Bay and along the Gulf Coast, the Army Corps of Engineers has proposed the largest project in its history.
A scenic view of the Houston Ship Channel.
Photographer: LOREN ELLIOTT/AFPIn coastal Texas and many other places, walled cities are making a comeback. It’s quite a turnabout, as the efficacy of defensive walls had declined precipitously since the age of the long bow. Barbarians still menace, of course. But the rekindled enthusiasm for defensive walls is a response to a different kind of threat.
San Francisco is contemplating a huge tidal wall across its bay to fend off sea rise and the attendant dousing of some of the world’s most expensive real estate. Miami is weighing the damage a sea wall would do to tourist vistas against the damage a rising sea might do absent a wall. New Orleans, after $14 billion in levee construction, is an armored metropolis. Norfolk, Virginia, another low-lying city exposed to a surging sea, is spending a few hundred million federal dollars on a downtown sea wall. New York City, which has flooded in two devastating storms so far this century, is building a $1.45 billion series of walls, floodgates and underground drainage, a modest down payment on the city’s defense against rising tides and storm surge.