Grand Canyon Monitoring and Research Center

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News Releases

outline map of ArizonaGrand Canyon National Park Resources Benefit from 2008 High-Flow Experiment at Glen Canyon Dam External Window Icon
Released: 2/2/2010 9:45:00 AM
Flagstaff, Ariz. -Resources along the Colorado River in Glen Canyon National Recreation Area and Grand Canyon National Park generally benefited from a high-flow experiment conducted in March 2008 from Glen Canyon Dam, near Page, Ariz., according to research findings released today by the U.S. Geological Survey.

outline map of ArizonaEndangered Humpback Chub Population Increases 50 Percent from 2001 to 2008 External Window Icon
Released: 4/27/2009 12:07:46 PM
Flagstaff, Ariz. - Adult endangered humpback chub (Gila cypha) in Grand Canyon, Arizona, increased by about 50 percent between 2001 and 2008, according to analysis recently conducted by the U.S. Geological Survey. The upward trend reverses population declines from 1989 to 2001. The estimated number of adult chub in the Grand Canyon population is between 6,000 and 10,000, with the most likely number being 7,650 individuals.

outline map of ArizonaGlen Canyon Dam High Flow Experiment Time Lapse Videos Available External Window Icon
Released: 4/7/2008
Time lapse videos of sandbars from the Glen Canyon Dam high flow experiment have been released by the U.S. Geological Survey (USGS). These videos show the impact of the high flow experiment at two locations over the course of the last 30 days.

outline map of ArizonaHigh-Flow Experiment Proposed to Improve Grand Canyon Resources External Window Icon
1/17/2008 5:25:05 PM
Flagstaff, Ariz. -An experiment using high flows from Glen Canyon Dam to study and improve Colorado River resources in Grand Canyon National Park has been proposed by the Department of the Interior.

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Grand Canyon Monitoring & Research Center | 2255 North Gemini Drive Flagstaff, AZ 86001 | Phone: 928.556.7380 Fax: 928.556.7100

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Last Update: November 3, 2011