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As Florida Keys residents confront rising sea levels, what lessons?

Waters around the Florida Keys are nine inches higher than a century ago. Efforts to battle rising sea levels make the Keys 'a canary in the coal mine,' an indicator of what other areas might need to prepare for.

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According to some predictions, the Key deer that Father Tony sees from his window will be gone, along with numerous other species of freshwater-dependent animals. Many plants wouldn't survive because of sea salt.

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Residents got a preview of some of these issues when hurricane Wilma swept through in October 2005. For example, the house that Bergh and his family live in was surrounded by water. Tall pines in a forest encircling the home were killed when the salt-laden waters of Wilma's storm surge swamped the fresh ground water that the trees relied on. Now, the trees are dry and bleached gray.

These days, there is also dead and dying vegetation in more open areas and in hardwood hammocks closer to the coast. In these places, tides are reaching levels they never did before.

So what is being done to address the problems? Although some politicians have tried to avoid the issue, George Neugent hasn't. The Monroe County commissioner recently toured the islands from Key Largo to Key West, highlighting areas of concern in a report afterward. He is also part of a task force that three Florida counties have formed to tackle sea-rise and global-warming issues.

Mr. Neugent stresses that he isn't taking a "Chicken Little, sky is falling" approach, but he says that action is needed now to counter effects from a further rise in sea level.

"There are those who take a position that it's not happening at all. As elected officials, we don't have that luxury," he says.

One place already taking action is Sombrero Country Club in Marathon, where water spills onto the golf course during exceptionally high tides.

"We've put berms in place to keep the salt water out and the fresh water in," says Joshua Mothner, the club's general manager. "We've also been trying saltwater-resistant grass on the lower holes." (Read here to learn about flood-resistant rice.)

Even so, Mr. Mothner acknowledges, only so much can be done. For one thing, the club's driving range is almost devoid of grass because of damage from previous floods, and that is unlikely to change in the near future.

In Key West, meanwhile, where high tides frequently flood streets, city officials have committed funds to improve a drainage system that dates back to the 1930s. Almost 290 intersections in the city are to receive new gravity wells, which will allow excess water to drain out to sea. The construction of the first 23 is scheduled to be completed by summer.

In addition, grant money from the Federal Emergency Management Agency (FEMA) is going toward electric pumps at two sites where gravity wells are already installed but not working well.

Another measure that is needed, Neugent says: a program that would raise 30 to 40 roads in flood-prone areas. But Dent Pierce, Monroe County's director of public works, has neither the budget nor the personnel to get the work done.

"We have many roads having this tidal flooding. But we also have a lot of bridges that have met their life expectancy that need $9 million of work to be put in good shape," he says. (Read here to see how New Yorkers deal with more frequent flooding.)

"The cost of everything goes up, up, up," adds Mr. Pierce. "Our entire road budget is only $4.6 million, and almost all of that is taken up before we can think about raising roads."

Still, he's aware of the challenges posed by higher water levels. "I feel for the people who call us when [roads] flood and think we can come out and fix it today," he says.