Treasure Island A Future Atlantis?

The City of San Francisco recently inked a deal to purchase the man-made Treasure Island sitting in its bay. But some wonder if an island threatened by rising sea levels was really such a smart buy.

1 minute read

December 28, 2009, 12:00 PM PST

By Nate Berg


The city has plans to redevelop the former Naval base into a 6,000 home neighborhood.

"Skeptics question whether a recently announced deal that will pay the Navy at least $55 million to transfer most of the island and part of neighboring Yerba Buena Island to the city is a good idea.

Is it smart, they ask, to pay millions for an island with postcard views but built out of seismically unsafe sand and gravel while the San Francisco Bay Conservation and Development Commission predicts climate change will raise sea levels more than 4 1/2 feet by 2100?

Absolutely, says Mayor Gavin Newsom's administration."

Monday, December 28, 2009 in San Francisco Chronicle

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

Use Code 25for25 at checkout for 25% off an annual plan!

Redlining map of Oakland and Berkeley.

Rethinking Redlining

For decades we have blamed 100-year-old maps for the patterns of spatial racial inequity that persist in American cities today. An esteemed researcher says: we’ve got it all wrong.

May 15, 2025 - Alan Mallach

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

May 14, 2025 - Diana Ionescu

Front of Walmart store with sign.

Walmart Announces Nationwide EV Charging Network

The company plans to install electric car chargers at most of its stores by 2030.

May 7, 2025 - Inc.

25mph speed limit sign with digital "Your Speed" sign below it.

Philadelphia Launches ‘Speed Slots’ Traffic Calming Pilot

The project focuses on a 1.4-mile stretch of Lincoln Drive where cars frequently drive above the posted speed limit.

10 seconds ago - WHYY

UPS delivery cargo bike with covered front seat in New York City

NYC Delivery ‘Microhubs’ Aim to Cut Down on Truck Pollution

The hubs are designed to provide parking for large delivery trucks, which can pass on their cargo to bikes or other zero-emission vehicles.

2 hours ago - Smart Cities Dive

Aerial view of Albuquerque, New Mexico at sunset.

New State Study Suggests Homelessness Far Undercounted in New Mexico

An analysis of hospital visit records provided a more accurate count than the annual point-in-time count used by most agencies.

May 16 - Source NM