Hay consumption strains Colorado River's water supply

In a revealing study, researchers pinpoint cattle-feed crops like alfalfa as major consumers of Colorado River's water, stirring debates on water use efficiency and sustainability.

Ian James reports for Los Angeles Times.


In short:

  • Cattle-feed crops, primarily alfalfa, account for 46% of the water diverted from the Colorado River, emphasizing agriculture's heavy water usage.
  • The study offers a comprehensive look at water distribution across the Western U.S. and Mexico, aiming to guide future water conservation efforts.
  • Agriculture's significant share of water use, compared to urban demands, highlights the urgent need for strategic crop management and conservation initiatives.

Key quote:

“It’s important to understand where all of the water goes. This is the first complete and detailed accounting.”

— Brian Richter, lead researcher

Why this matters:

Alfalfa, known for its high water needs, is a key crop in the agricultural profile of states like Arizona and California, both of which rely heavily on the Colorado River for irrigation. The crop's cultivation consumes more water than any other in California, and it's a major user in Arizona as well, states that are already facing water allocation challenges due to the river's overextension.

Climate change—and the subsequent increase in droughts, flooding, and extreme heat—has held back agricultural gains and impeded global food security efforts.

Ocean research vessel sailing on the water

Changes in funding could tank quality of ocean heat content data

An uncertain funding landscape threatens the longevity of an ocean observation system critical to projecting tropical storms, sea level rise, and more.
A child holding a protest sign that says 'the ocean is rising and so are we'

Why the Sunrise Movement reorganized to fight authoritarianism

Sunrise Executive Director Aru Shiney-Ajay discusses why she thinks fighting authoritarianism and climate change go hand in hand.

A dock stretching into a body of water

As strong El Niño develops off the Pacific, experts say Vermont impact is tough to tease out

Particularly warm water forming along the coasts of North and South America have caught the eyes of weather watchers across the globe, but the impacts on Vermont are murky for now.

A worker with a stop sign directing traffic in a construction zone

No federal heat standard? NYC workers are building their own safety net

As summer temperatures climb, city agencies and community groups are partnering to protect workers against extreme heat.
Two men on a sailboat

Sailing's governing body tries to make Olympic equipment sustainable

The governing body for sailing is looking at how the sport’s Olympic-class equipment is made, used and discarded, to eventually make changes that will reduce its environmental impact.
A row of wind turbines situated behind a row of solar panels

Sweeping victory for Europe as 15 nations top climate scoreboard

Europe ranks first in the latest Environmental Performance Index, partly due to the boom in renewables. But experts warn that more progress is needed.

Chinese forest replenishment in progress meant to reverse desertification, China, Gansu, Wuwei.
Credit: Photo by Lok Kwan on Unsplash

China fights spread of deserts with 'straw checkerboards'

For half a century, workers in northern China have been using a technique called "straw checkerboards" to combat desertification.
From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.