Summer’s Subway Floods Have Cities Questioning Preparedness

Image: Epicgenius via Wikimedia Commons

By Natasha Lasky, ODP Staff Writer

Hurricanes have been posing increasing threats to infrastructure in East Coast cities, hitting subways particularly hard. Last month’s Hurricane Ida flooded New York City’s subway tunnels, shut down Amtrak’s Northeast Corridor, and washed out a commuter line in Philadelphia. These extreme weather events and their effects are prompting city officials from across the world to reconsider how to prevent further damage from heavy rains.


Why this Matters: Storms and hurricanes will only get worse as climate change intensifies, and our cities will have to prepare — quickly. Hurricane Ida dumped 75 million gallons of water into New York City subways almost a decade after Superstorm Sandy hit the coast, which prompted billions of dollars to be invested to protect the East Coast from flooding. Despite such spending, the Regional Plan Association projects more than 400 subway entrances could still be affected by heavy rainfall.


Other cities worldwide have also taken action to fortify themselves against climate change. In 2006, Tokyo constructed underground chambers — big enough to fit a space shuttle or the Statue of Liberty — to divert floodwater from its subway system. Copenhagen, too, built its City Circle Line with climate change in mind, implementing floodgates and raised entryways. 

In the US, President Joe Biden’s $1.5 trillion infrastructure plan has yet to pass, and the nation is racing the clock to implement similar projects for American cities.


A Flood of Infrastructure Innovations

In the short term, New York City has considered putting curbs at subway entrances to keep water from getting in, and in the long term, building canals to drain flooded tunnels. 


In Philadelphia, signal huts, which contain equipment that controls their commuter line, were raised to prevent them from flooding, but not high enough to keep the water out. 


Washington DC public transit officials have been preparing for climate change over the last two decades, lifting ventilation shafts, revamping the drainage system, and putting in pumping stations. But the city’s Cleveland Park station on the Red Line was forced to shut down during Hurricane Ida, prompting transit officials to look at its vulnerabilities to climate change more closely.


Boston successfully installed flood barriers near a T station at the downtown waterfront, which prevented it from flooding. The Massachusetts Bay Transportation Authority is also planning to put up a seawall to protect a busy Blue Line stop, install tunnel pumps along the harbor, and potentially build a berm around a marsh near the Blue Line. 


Boston’s “climate resilience” program manager Sanjay Seth summarized the task ahead for the Associated Press: “This is our moment to make sure our transit system is prepared. There’s a lot that we need to do in the next 10 years, and we have to do it right. There’s no need to build it twice.”

Up Next

Atmospheric Carbon Levels Reach 3 Million Year Highs Ahead of COP26

Atmospheric Carbon Levels Reach 3 Million Year Highs Ahead of COP26

By Amy Lupica, ODP Daily Editor Atmospheric carbon dioxide levels have hit a three-million-year high, according to a World Meteorological Organization (WMO) report published yesterday. Despite a brief dip in emissions in 2020 due to the COVID-19 pandemic, the overall trend of increasing emissions continues, indicating last year’s dip had little to no impact on […]

Continue Reading 313 words
Global Leaders and Scientists on the Economic Cost of Biodiversity Loss

Global Leaders and Scientists on the Economic Cost of Biodiversity Loss

By Natasha Lasky, ODP Staff Writer A report in the Dasgupta Review shows that by using a fiscal lens to view Earth’s growing biodiversity loss, we can see how it links to economic development. By viewing nature as an asset like “produced capital (roads, buildings and factories)” or “human capital (health, knowledge and skills)” — […]

Continue Reading 376 words
Plastic Industry Set to Outpace Coal Emissions by 2030

Plastic Industry Set to Outpace Coal Emissions by 2030

By Natasha Lasky, ODP Staff Writer While coal use is a leading source of greenhouse gas emissions, another industry is set to outpace it: plastic. A new report from Bennington College and Beyond Plastics estimates the plastic industry emits over 232 million tons of greenhouse gases each year, the equivalent of 116 coal-fired power plants.  […]

Continue Reading 272 words

Want the planet in your inbox?

Subscribe to the email that top lawmakers, renowned scientists, and thousands of concerned citizens turn to each morning for the latest environmental news and analysis.