Cities Win the Water Reallocation Game, Study Shows

A new study says that huge amounts of water are moved from rural areas to cities to support rapidly growing urban populations.

1 minute read

April 23, 2019, 8:00 AM PDT

By Camille Fink


California Water Pipeline

Linnaea Mallette / PublicDomainPictures.net

Water reallocation projects are diverting 16 billion cubic meters of water from rural areas to cities each year, according to new paper in the journal Environmental Research Letters. The problem will only grow since United Nations predictions show 2.5 billion people are expected to move to cities by 2050.

The study analyzed urban areas and reallocation projects around the world, with the majority in North America and Asia, and finds that urbanization is increasing competition between cities and agricultural areas. "Dr. [Dustin] Garrick said the world was ‘woefully underprepared’ due to a lack of data, particularly in South America and Africa."

Rural areas were most often the losers in reallocation projects, but planning has helped to mitigate outcomes. "The Mexican city of Monterrey, for example, provided farmers with compensation and city wastewater for irrigation, after diverting water from a tributary of the Rio Grande river in the 1990s, Dr. Garrick said."

Thursday, April 11, 2019 in The Straits 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

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

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.

April 16, 2025 - Diana Ionescu

Black and white photos of camp made up of small 'earthquake shacks' in Dolores Park in 1906 after the San Francisco earthquake.

The 120 Year Old Tiny Home Villages That Sheltered San Francisco’s Earthquake Refugees

More than a century ago, San Francisco mobilized to house thousands of residents displaced by the 1906 earthquake. Could their strategy offer a model for the present?

April 15, 2025 - Charles F. Bloszies

Ken Jennings stands in front of Snohomish County Community Transit bus.

Ken Jennings Launches Transit Web Series

The Jeopardy champ wants you to ride public transit.

April 20 - Streetsblog USA

Close-up on BLM sign on Continental Divide Trail in Rawlins, Wyoming.

BLM To Rescind Public Lands Rule

The change will downgrade conservation, once again putting federal land at risk for mining and other extractive uses.

April 20 - Public Domain

Calvary Street bridge over freeway in Indianapolis, Indiana.

Indy Neighborhood Group Builds Temporary Multi-Use Path

Community members, aided in part by funding from the city, repurposed a vehicle lane to create a protected bike and pedestrian path for the summer season.

April 20 - Smart Cities Dive