Mapping the Effects of Human Intervention on the Global Water Supply

Climate change is only part of the story, but humans have left a detectable footprint on the distribution of the global water supply.

1 minute read

May 21, 2018, 10:00 AM PDT

By James Brasuell @CasualBrasuell


Drought

Tom Grundy / Shutterstock

Eric Holthaus shares news of a new study that analyzes data from groundwater-detecting satellites. The results of the study, published in the journal Nature, are "equal parts terrifying and long-expected," according to Holthaus.

The authors used the satellite data to construct a map of 34 rapidly changing regions around the world, painting a unified picture of current hot spots of water scarcity and excess. Nearly every activity that involves people requires water — rice farming, nuclear power, aluminum smelting, you name it — so the lives of people living where reserves are being rapidly depleted are under grave threat.

According to Holthaus, the study makes the future threat of water scarcity abundantly clear.

Wednesday, May 16, 2018 in Grist

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

September 30, 2026 - Zachary Whalen

An Airo train driving towards the camera on a track. There is a forest behind it.

Northwest rail fans eager for Sept. 30 debut of Amtrak’s Airo fleet

Get ready for that new train smell and more seats. But they won’t go faster or run more frequently on the Cascades route in Washington and Oregon.

September 22, 2026 - Washington State Standard

A rendering of the planned bridge over a large river. The bridge has two main support beams that form diamond shaped arches over the bridge.

Alabama scores up to $2.5 billion federal loan for largest infrastructure project in state’s history

The Mobile River Bridge and Bayway Project aims to ease congestion at Alabama’s worst bottleneck.

September 20, 2026 - NBC 15

A birds-eye view of the construction of an apartment.

Novel study finds extreme state-by-state disparity in housing construction timelines

The first comprehensive working paper on U.S. construction timelines also found that the permitting process for multi-family projects has slowed nationwide.

October 1 - Vox

A crowd of people play in the sand at a California beach at sunset.

California may destroy its beaches trying to save homes from El Niño

Boulders and seawalls can protect homes from waves, but ultimately destroy sandy beaches.

October 1 - Los Angeles Times

Construction for California's high-speed rail line. A concrete bridge stretches over a dirt field.

California high-speed rail accomplishes only one legislative goal in 2026

The majority of the agency's failed pitches were never developed into written proposals.

October 1 - Cal Matters

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design