A 20-Foot Sea Wall? Miami Faces the Hard Choices of Climate Change.

A proposal to construct barriers for storm surge protection has forced South Floridians to reckon with the many environmental challenges they face.

MIAMI — Three years ago, not long after Hurricane Irma left parts of Miami underwater, the federal government embarked on a study to find a way to protect the vulnerable South Florida coast from deadly and destructive storm surge. Already, no one likes the answer. Build a wall, the U.S. Army Corps of Engineers proposed in its first draft of the study, now under review. Six miles of it, in fact, mostly inland, running parallel to the coast through neighborhoods — except for a one-mile stretch right on Biscayne Bay, past the gleaming sky-rises of Brickell, the city’s financial district.