Note:  Images require QuickTime Player that can be downloaded at http://www.apple.com/quicktime/download/. To watch the
movie again, double click on the movie image, click "refresh" in your browser, or click on the arrow in the lower left corner
of the movie screen.

Video clips prepared by S.G. Berk at the Center for the Management, Utilization and Protection of Water Resources at Tennessee Technological University.