Manhattan’s flood walls are almost done. What will Mamdani do next?

New York City is close to finishing the flood defenses it started building after Superstorm Sandy in 2012. Lower Manhattan's rolling flood walls, which roll into place during major storms, should be working by the 2027 hurricane season. Mayor Zohran Mamdani is now expanding the city office that will run and maintain these defenses, adding nearly 70 staff to deploy the gates and clear the coastline before storms.

The bigger question is what gets built next, and where. New York has more than 500 miles of coastline, and officials say there's no way to protect all of it. Areas like Coney Island, which flooded badly during Sandy, still have no new defenses, while East Harlem has had a flood-protection design ready for nearly a decade with no funding to build it. The city plans to start a broader master plan next year, aiming to finish by 2031, that would look at both coastal flooding and stormwater flooding together.

For homeowners in flood-prone parts of the city, this means protection is still uneven and depends heavily on where you live. Some neighborhoods, like Red Hook, are getting upgrades that critics say are too modest, protecting against smaller "10-year" storms rather than the bigger storms Manhattan is built to withstand. Others, including Coney Island, have no timeline yet. If you're in a coastal or flood-prone area, it's worth watching whether your neighborhood is included as the city's next round of planning takes shape.