"Everglades (Fla.)" . . "Colorado River (Colo.-Mexico)" . . . . "Great Lakes Region (North America)" . . . . . "Fresh water resource at risk"@en . . . . . . . . . . . . . . . . . . . . "The video takes a look at some of the threats to North America's water supply and at the actions people are taking to protect the quality and quantity of their freshwater resources."@en . . . "Ogallala Aquifer" . . "Erie, Lake" . . "Glen Canyon Dam (Ariz.)" . .