Subject(s): Dam retirement -- Dams in Economic aspects -- Water-power in United States. -- Lessons from dam removals in US -- Why dams are being removed in America : Problems of dam removal, funding sources for dam removal -- Examples of dam removal in America : Economic analysis of removing four dams on lower snake river, non use values lead to removal of Elwha dam, removal of Edwards dam and embrey dam, denial for wilkes - barre inflatable structure, Motts run water treatment plant -- Cost benefit analysis of hydropower dams : Cost benefit analysis, economic value of hydropower, critique of FERC's approval to klamath hydroelectric dam -- Environmental impacts of hydropower dams : Impacts of hydro dams on environment, impact of hydro turbines on water quality, river continuum concept, wild and scenic act, wild and scenic act in operation -- Economic value of free flow of rivers : Non use value of free flowing rivers, economic value of rivers, economic value of river banks