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Groundwater Depletion in Colorado River Basin Poses Big Risk to Water Security

Let’s step back for a minute and consider the implications of the study released last week on the depletion of groundwater in the Colorado River Basin. For anyone concerned about the future of the American West, the findings of this study – which was published online in the journal Geophysical Research Letters and conducted by…

West-Slope Colorado Towns Restore Local Flows, Even as Thirsty Front-Range Lawns Drink From their Rivers

  By Sandra Postel and Todd Reeve When residents in Denver, Colorado Springs and other cities on the Front Range of the Rocky Mountains turn on their sprinklers to irrigate lawns, they rarely think about the fate of fish in the headwaters of the Colorado River on the other side of the Continental Divide. But,…

World’s Large Cities Move Water Equivalent to Ten Colorado Rivers to Meet their Annual Water Needs

As cities grow in population and economic activity, they reach further and further out to find water to meet their needs. Now, a new study has estimated that collectively the world’s large cities, defined as those with at least 750,000 people, move 504 billion liters (133 billion gallons) of water a day a cumulative distance…

The Unsung Heroes of the Colorado River Delta Pulse Flow

This spring, the gates were opened at Morelos Dam, the furthest downstream in a string of infrastructure along the Colorado River that store and divert water to people and industries throughout the basin.  Sitting approximately 100 river miles upstream of the Sea of Cortez, Morelos Dam has been the southern terminus of the Colorado River…

A Sacred Reunion: The Colorado River Returns to the Sea

After coursing through its delta for nearly eight weeks, the fresh waters of the Colorado River have touched the high tides of the salty sea. It is the first time in sixteen years that the Colorado River, which flows 1,450 miles (2,334 kilometers) from its headwaters in the Rocky Mountains of Colorado  to the Sea…

The Colorado River Flows to the Sea

This week, the Colorado River will be reunited with the sea – a destination it hasn’t seen in many years – thanks to the “pulse flow.” Scientists monitoring the flow expect the two waters to meet sometime tomorrow, during high tide, but it’s actually possible that the river reached the sea last week, as we…

Gila River Diversion Would Be a Costly Failure

As the December deadline approaches for New Mexico to decide whether or not it will proceed with a controversial diversion of the Gila River, a former director of the state’s Interstate Stream Commission (ISC) testified on April 30 to the ISC that the proposed diversion would result in “a failed project that would produce little…

An Innovative Conservation Fund for the Colorado River

The four largest cities that get their drinking water from the Colorado River are gearing up to pilot an innovative conservation scheme that pays farmers, industries and municipalities to reduce their use of the river’s water. The main aim of the new initiative is to keep the levels of Lake Mead and Lake Powell, the…

Working Together to Change the Course

Everybody prefers a healthy, flowing river to a dried-up river channel. But in many parts of the world, including much of the western United States, it sometimes appears like we have to dry up our rivers to grow the food we need – that we can’t have productive agriculture and healthy rivers side-by-side. But, in…

Landscapes Transform With the Arrival of the Colorado River

It’s a rare event to see a river literally form before your eyes. But each day that we ventured out to find the leading edge of the Colorado River as it advanced through its delta during this historic “pulse flow,” we were treated to exactly that phenomenon: a dry, sandy channel that hasn’t seen water…

Monitoring the Pulse of the Colorado River

Now in its 14th day, the historic pulse flow coursing through the Colorado River Delta toward the sea is under the careful watch of dozens of scientists who fan out across the landscape to measure and track its vital signs – from flow rates and salinity levels to seed dispersal by native cottonwoods and willows.…

A Colorado Delta Community Reconnects with its River

On Tuesday afternoon, March 25, 2014, word got out that the river was coming. Kids, parents, dogs and teenagers began gathering at the bridge in San Luis Rio Colorado, a border town of about 160,000 people. Young people had never seen the river that gives this town its name flow beneath the bridge. They waited. …

Witnesses to History at Morelos Dam on the Colorado River

A dozen dignitaries faced a crowd of more than two hundred gathered yesterday at Morelos Dam in the Mexican city of Los Algodones, Baja California, to proclaim the release of a “pulse flow” of Colorado River water to its dry delta a momentous occasion for both the river and binational relations. (See “Historic Pulse Flow…

This World Water Day, Something Big to Celebrate

On Monday, March 24, I leave on a trip to witness an event I never thought I’d see:  the Colorado River flowing through its delta toward the sea. Except in years of unusually high precipitation in its watershed, the Colorado hasn’t coursed through its delta for most of the last half century. Its entire flow…

Robert Redford and Will Ferrell “Fight” Over the Colorado River

Stars Robert Redford and Will Ferrell have a bone to pick with each other when it comes to water. Well, not really, but they do make some good points in this funny video calling for restoration of the embattled, and thirsty, Colorado River Basin. The celebrities are working to support Raise the River, a campaign building…