捍卫曼哈顿下海平面上升的计划正在塑造一项提议，要求饲养近一英里的海滨，并将海岸线扩展到东河200英尺。

纽约市经济发展公司（EDC）于11月17日展示了其对城市沿海弹性战略的金融区和海港区的最新愿景。它要求沿电池和布鲁克林桥之间的一英里长的延伸，建造一个多层海滨。

下层将是比目前的滨海滨海高3到5英尺的滨水区，并将由上层凯森（Caisson）备份，上面放着洪水壁和门比当前海滨高15到18英尺。任何最终项目都可能有多年的时间。最新提案的成本估算约为50亿美元或更多。

作为计划的一部分，必须在目前的位置重建几个码头和直升机。用于史坦顿岛渡轮的白厅渡轮码头也必须重建。这座历史悠久的电池海事大楼目前用于州长岛的渡轮服务，但没有渡轮，服务将被移至新的渡轮码头旁边建造。

To prevent stormwater from flooding inside the flood wall, Roni Deitz, the urban and community resilience practice lead at engineering firm Arcadis, says the plan also calls for new drainage infrastructure, including a pump station.

要延伸到东河的土地部分将用于较低层的公园和广场空间，并且上层可能包含一些单层或两层楼的建筑物，包括餐馆。

EDC副总裁Jocelyn Dupre说，在对该计划的较早版本的反馈后，就删除了针对高层住宅或办公楼的建议。为了容纳河流栖息地，该计划包括要建造的结构化栖息地等生态保存策略，以及布鲁克林桥下的海滩。

NYC_FiDi_Resilience_ENRwebready.jpgRendering courtesy of New York City Economic Development Corp.

The team designed the plan to work with or without the FDR Drive, an elevated highway along Manhattan's East Side that connects to the Brooklyn Bridge. Its removal and replacement with an at-grade road has been discussed, but not finalized.

“我们知道这是一个定义特性沿着这窟erfront,” Dupre says. “But we also know we cannot predicate achieving flood resiliency on taking down an elevated highway.”

EDC Waterfronts副总裁Elijah Hutchinson表示，金融区和Seaport的气候弹性总体规划以及Seaport以及实施路线图将于2021年底发布。这是一项更大的弹性战略的一部分，可以在各个阶段保护下曼哈顿的一部分。多个部分的开发，包括炮台公园城，电池和布鲁克林桥 - 蒙哥马利街。

Areas north on the east side fall under the $1.45-billion East Side Coastal Resilience project, which broke ground earlier this year, while EDC points to the ongoing U.S. Army Corps of Engineers’ New York-New Jersey Harbor and Tributaries study for protection further north beyond Battery Park City on the west side.

“The Seaport master plan is that important missing link,” Hutchinson says.

NYC_Seapot_Resilience_ENRwebready.jpg由纽约市经济发展公司提供渲染

While the Financial District is in the future, Mayor Bill de Blasio announced in October that the city was allocating $110 million for a related proposed project from Pier 17 to the Brooklyn Bridge that would rebuild and raise the existing bulkhead and improve drainage. Hutchinson says the low-lying area is most vulnerable to rising tides. The goal is to complete that project within the next five years.

Plans to make Manhattan more resilient have already been years in the making, following extensive flooding caused by Hurricane Sandy in 2012.

In 2014, officials chose the"Big U" planto ring the lower end of the island with parks and other green space as a new layer of protection against floods. That plan was later broken up into smaller pieces for implementation, and some sections faced additional changes to create taller barriers against rising seas.

Beyond storm surge, projections show sea level rise could lead to monthly flooding in lower Manhattan as soon as the 2040s, and daily flooding by the 2080s.

哈钦森说，到2100年，每天的高潮可能没有采取任何行动，可以到达内陆三个街区。