New Ideas for Coastal Flood Protection

‘Living With Water’: Cities Facing Climate Change Trade Sea Walls for Parks

To protect itself from a devastating flood, Boston was considering building a massive sea wall, cutting north to south through nearly 4 miles of Boston Harbor, taking $11 billion and at least 30 years to build. But a new plan unveiled in October represents a 180-degree turn: Instead of fighting to keep the water out, the city is letting it come in.

Boston Mayor Martin Walsh, a Democrat, announced the city would be scrapping the idea of a sea wall in favor of, among other things, a system of waterfront parks and elevation of some flood-prone areas. The city will add 67 new acres of green space along the water and restore 122 tidal acres.

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