On May 31, 1889, the South Fork Dam that formed Conemaugh Lake in central Pennsylvania burst, sending 20 million tons of water rushing into the Conemaugh Valley in a 40-foot-high wall of destruction that decimated the city of Johnstown and left over2,000 dead. This striking documentary uses historical re-creations to depict the events and aftermath of the country's most devastating flood disaster. Richard Dreyfuss narrates. 84 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital 5.1;Subtitles: English; audio commentary; featurette.