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Key Water and Sediment Science Contacts
Released: 3/22/1996

Contact Information:
U.S. Department of the Interior, U.S. Geological Survey
Office of Communication
119 National Center
Reston, VA 20192
Rebecca Phipps 1-click interview
Phone: 703-648-4460

Call the U.S. Geological Survey scientists listed below for information about the water science aspects of the controlled flood experiment in the Colorado River, Mar. 22-April 7, 1996. Mark Anderson is the key information scientist for the USGS on-site, and other scientists are working on-site and are available on a limited basis. Still others will be in the USGS office in Tucson throughout the experiment to answer questions.

Who can give me the big water science picture regarding the controlled flood in the Colorado River?

USGS hydrologist Mark Anderson in Tucson, Ariz., at (520) 670-6671. During the experiment he may be reached at (520) 419-0795 (cellular) or at the Marble Canyon Lodge at (520) 355-2225.

What is a ’controlled flood’ and why should the rest of the country be interested?

Call Robert Hirsch, USGS Chief Hydrologist, at (703) 648-5215, for information.

How much water typically flows down the Colorado River and how much water will the experimental flood involve?

Call USGS hydrologist Mark Anderson at the numbers listed above.

I like to camp in the Grand Canyon. What will be the impact of the flood on camping areas and sandbars?

Call USGS hydrologist Julia Graf or Chris Smith in Tucson, Ariz., at (520) 670-6671.

Why are you dumping dye into the Colorado River?

Call USGS hydrologists Mark Anderson or Steve Longworth in Tucson, Ariz., at (520) 670-6671.

What will be the impact of the experimental flood on water quality in the Colorado River?

Call USGS hydrologist Chris Smith in Tucson, Ariz., at (520) 670-6671.

What about sediment?

Call USGS hydrologists Julie Graf or Steve Longworth in Tucson, Ariz., at (520) 670-6671.

Can I watch the flood on the World WideWeb?

Yes! Follow the flood as it happens on the World Wide Web at http://h2o.usgs.gov. Information on streamflow gages that you may access to ’watch’ the flood is at the top of the page.

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