Sea-Level Rise Would Be Worse for Coastal Cities Than Previously Thought

A new model for expected sea-level rise raises alarms about the need to adapt to sea-level rise in coastal cities all over the world.

1 minute read

November 5, 2019, 1:00 PM PST

By James Brasuell @CasualBrasuell


Climate Change and Flooding

Flooding on the streets of Mumbai, India in July 2019. | arun sambhu mishra / Shutterstock

"Rising seas could affect three times more people by 2050 than previously thought, according to new research, threatening to all but erase some of the world’s great coastal cities," report Denise Lu and Christopher Flavelle.

Scott A. Kulp and Benjamin H. Strauss, researchers from Climate Central, published the new findings on the elevations of sea-level rise in the journal Nature Communications. According to the model produced in the study, 630 million people live in land below elevations projected for annual floods in the year 2100. "We estimate one billion people now occupy land less than 10 m above current high tide lines, including 250 M below 1 m," reads the study's abstract.

The article provides illustrations of the stark reality of such projections. "Southern Vietnam could all but disappear," for instance. "More than 20 million people in Vietnam, almost one-quarter of the population, live on land that will be inundated." Bangkok, Shanghai, Mumbai, Alexandria, and Basra will all be severely inundated by the end of the century according to the model.

Tuesday, October 29, 2019 in The New York Times

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Concrete Brutalism building with slanted walls and light visible through an atrium.

What ‘The Brutalist’ Teaches Us About Modern Cities

How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

February 28, 2025 - Justin Hollander

Cars on a New York City street

USDOT Revokes Approval for NYC Congestion Pricing

Despite the administration’s stated concern for the “working class,” 85 percent of Manhattan commuters use public transit to enter the city.

February 20, 2025 - StreetsBlog NYC

Tiny home village for unhoused reisdents in Torrance, California.

Tiny House Villages for Addressing Homelessness: An Interview with Yetimoni Kpeebi

One researcher's perspective on the potential of tiny homes and owner-built housing as one tool to fight the housing crisis.

February 20, 2025 - Mark Tirpak

Charred trees on hillside in Altadena, California after Eaton Fire.

Preserving Altadena’s Trees: A Community Effort to Save a Fire-Damaged Landscape

In the wake of the Eaton Fire, Altadena Green is working to preserve fire-damaged but recoverable trees, advocating for better assessment processes, educating homeowners, and protecting the community’s urban canopy from unnecessary removal.

March 3 - LAist

Green electric Volkswagen van against a beach backdrop.

The VW Bus is Back — Now as an Electric Minivan

Volkswagen’s ID. Buzz reimagines its iconic Bus as a fully electric minivan, blending retro design with modern technology, a 231-mile range, and practical versatility to offer a stylish yet functional EV for the future.

March 3 - ABC 7 Eyewitness News

Tent covered with camouflage tarp with American flag on front under freeway overpass in California.

Investigation Reveals Just How Badly California’s Homeless Shelters are Failing

Fraud, violence, death, and chaos follow a billion dollar investment in a temporary solution that is proving ineffective.

March 3 - The Associated Press

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.