America has a flooding problem. When Hurricane Milton hit Florida, the images of inundation seemed shocking — but also weirdly normal: For what felt like the umpteenth time this year, entire communities were underwater. Since the 1990s, the cost of flood damage has roughly doubled each decade, according to one estimate. The federal government issued two disaster declarations for floods in 2000. So far this year, it has issued 66.

The reasons are no mystery. Global warming is making storms more severe because warmer air holds more water. At the same time, more Americans are moving to the coast and other flood-prone areas.

Those conflicting trends are forcing people to adapt. Advances in design, science and engineering — combined with a willingness to spend vast amounts of money — have allowed the United States and other wealthy countries to try new ideas for coping with water. In today’s newsletter, I’ll tell you about the three basic ways to deal with flooding.

1. Fight the water

The first strategy is to fight the water: Build walls to keep it out of your city, along with giant pumps and drains to remove whatever water gets in. Think of Holland, much of which would be underwater without a massive network of barriers, or Venice, which now relies on sea walls during high tide.

But thanks to climate change, this approach means ever-more-epic fortifications. After Hurricane Katrina, the federal government built a $14 billion, 350-mile defensive ring around New Orleans. The United States is also looking at building 12 movable sea barriers to protect New York Harbor from a storm surge, at an initial cost of $52 billion.