Our Coast to Fix -- or Lose

Every inch of those 10,000-plus miles lets saltwater penetrate, and eat away at, the coast. So energy production has enormously accelerated what was a slow degradation, transforming a long-term problem into an immediate crisis. The deprivation of sediment is like moving a block of ice from the freezer to the sink, where it begins to melt; the effect of the canals and pipelines is like attacking that ice with an ice pick, breaking it up.

As a result, 2,100 square miles of coastal land and barrier islands have melted into the Gulf of Mexico. This land once served as a buffer between the ocean and populated areas in Louisiana and part of Mississippi, protecting them during hurricanes. Each land mile over which a hurricane travels absorbs roughly a foot of storm surge.

The nation as a whole gets nearly all the benefits of engineering the river. Louisiana and some of coastal Mississippi get 100 percent of the costs. Eastern New Orleans (including the lower Ninth Ward) and St. Bernard Parish -- nearly all of which, incidentally, is at or above sea level -- exemplify this allocation of costs and benefits. Three man-made shipping canals pass through them, creating almost no jobs there but benefiting commerce throughout the country. Yet nearly all the 175,000 people living there saw their homes flooded not because of any natural vulnerability but because of levee breaks.

· Fact 6: Without action, land loss will continue, and it will increasingly jeopardize populated areas, the port system and energy production. This would be catastrophic for America. Scientists say the problem can be solved, even with rising sea levels, but that we have only a decade to begin addressing it in a serious way or the damage may be irreversible.

Despite all this and President Bush's pledge from New Orleans in September 2005 that "we will do what it takes" to help people rebuild, a draft White House cuts its own recommendation of $2 billion for coastal restoration to $1 billion while calling for an increase in the state's contribution from the usual 35 percent to 50 percent. Generating benefits to the nation is what created the problem, and the nation needs to solve it. Put simply: Why should a cab driver in Pittsburgh or Tulsa pay to fix Louisiana's coast? Because he gets a stronger economy and lower energy costs from it, and because his benefits created the problem. The failure of Congress and the president to act aggressively to repair the coastline at the mouth of the Mississippi River could threaten the economic vitality of the nation. Louisiana, one of the poorest states, can no longer afford to underwrite benefits for the rest of the nation.

John M. Barry is the author of "Rising Tide" and secretary of the Southeast Louisiana Flood Protection Authority East.