colorado river

River Running Record Attempt Aborted

KNAU Staff — Wed, 21 Nov 2012 17:15:23 +0000

Update Wednesday 11-21-12 10:06 am: Harlan Taney has aborted his attempt to break the speed record for boating down the Colorado River through the Grand Canyon.

Flagstaff Man Tries to Break Colorado River Running Record

Janice Baker — Wed, 21 Nov 2012 16:19:00 +0000

While most of us were sleeping last night, a Flagstaff man was out to break a record.

US And Mexico Make Water History

Laurel Morales — Wed, 21 Nov 2012 00:38:24 +0000

The United States and Mexico signed an historic agreement Tuesday to ration and protect Colorado River water.

US, Mexico To Sign Landmark Colorado River Agreement

Laurel Morales — Mon, 19 Nov 2012 22:58:33 +0000

The Hoover Dam was built to control the powerful Colorado River, which for many years flooded farms and cities.

The Humpback Chub is Making a Comeback

Anne Minard — Thu, 26 Jul 2012 01:31:05 +0000

There was a time when scientists feared the demise of an ugly little fish called humpback chub, which has lived in southwestern rivers for millions of years. One of its last holdouts is in the Grand Canyon section of the Colorado River at a major tributary, the Little Colorado. Glen Canyon Dam took its toll on the little fish, and by the late 1990s, its population plummeted to a few thousand.

But these days, the humpback chub appears to be making a comeback.

Simulated Floods Designed To Mitigate Dam Impacts

Thu, 05 Jul 2012 22:34:36 +0000

The Colorado River is about to run wild again, at least a couple times a year. In May, Interior Secretary Ken Salazar approved a series of simulated floods -- releasing huge amounts of water and sediment from the Glen Canyon Dam over the next several years. It’s all part of a long-studied effort to restore the river environment downstream.

Earth Notes: Exploring Fish Ecology in the Colorado River Drainage

Alexandra Murphy — Wed, 01 Feb 2012 07:00:00 +0000

Over the past hundred years, people have introduced dozens of non-native fish species into the Colorado River and its tributaries. During that time, populations of native fish species have dropped, in some cases dramatically. It’s easy to guess at the causes of native species decline, like predation and competition for food. But it’s far more difficult to prove.

Mexico and the United States working toward deal to help revive Colorado River Delta

Tue, 15 Nov 2011 16:44:44 +0000

Mexico and the United States are working toward a broad package deal that would help revive the Colorado River Delta.