Grand Canyon Monitoring and Research Center

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Feature Stories

View of the Colorado River in Grand Canyon, Arizona, showing sandbars that form downstream from tributary debris fans, which constrict the flow of the river and cause eddies. The view is looking upstream at a point approximately 217 miles downstream from Glen Canyon Dam (photo by Sam Jansen) - story details below
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A Sand Budget for Marble Canyon, Arizona
Recent U.S. Geological Survey research is providing important insights into how best to monitor changes in the amount of tributary-derived sand stored on the bed of the Colorado River and in eddies in Marble Canyon, Arizona.


Colorado River. - story details below
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Native and Nonnative fish Populations are food Limited
Fish population in the Colorado River downstream from Glen Canyon Dam appear to be limited by the availability of high-quality invertebrate prey.


Photographs of the shoreline cavity site RK 104.6L and the 10-meter thermistor-string deployment for determination of nearshore temperatures in the Colorado River in Grand Canyon during the Low Steady Summer Flow experiment of 2000 across the channel - story details below
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Water temperatures in select nearshore environments
Water releases from Glen Canyon Dam, Arizona, are the primary determinant of streamflow, sediment transport, water quality, and aquatic and riparian habitat availability in the Colorado River downstream of the dam in Grand Canyon.


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Identification and Evaluation of Scientific Uncertainties
Identifying areas of scientific uncertainty is a critical step in the adaptive management process (Walters, 1986; Runge and others, 2011a). Knowledge Assessment Workshops in May and July 2005.


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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