COASTAL DEFENSE EXPERTS SAY IKE DIKE WON’T BE ENOUGH WITHOUT A BACKUP WALL
With the public comment period underway on the Ike Dike proposal the Army Corps issued last month, Rice University scientist Jim Blackburn weighs in on the project: “We think that there is too much remaining surge exposure,” he tells the Chronicle‘s Nick Powell on behalf of the research team he heads. Why’s that? “The storms that are being analyzed by the Corps are, in my opinion, too small,†Blackburn says. “They’re just not making landfall at the worst locations, with the type of wind fields and characteristics we’re seeing.” Had the Corps’ methodology accounted for a worst-case storm, says Blackburn, its analysts would’ve seen that the projects they proposed — 70 miles worth of walls and gates between High Island and San Luis Pass — are inadequate without a key addition: an upstream gate that’d run across the middle of Galveston Bay, further shielding the Ship Channel and its adjacencies from floodwaters. “We are going to argue that to any governmental entity that is interested,” says Blackburn, adding, “I think we need options. If all of our eggs are in a $30 billion federal appropriation, that just sounds too risky to me.†One key selling point for the gate: It could be built in about half the time the other proposals would take and at a fraction of their cost, says Blackburn, between $3 billion to $5 billion. [Houston Chronicle ($); previously on Swamplot] Map of Ike Dike proposal: U.S. Army Corps of Engineers