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- Die South-Fork-Talsperre mit ihrem Stausee Lake Conemaugh lag nahe im US-Bundesstaat Pennsylvania nahe dem heutigen . Am 31. Mai 1889 versagte der Staudamm nach heftigen, mehrere Tage andauernden Regenfällen, worauf 20 Millionen Kubikmeter Wasser 23 Kilometer talabwärts rasten und in Johnstown eine verheerende Flut verursachten. Dabei wurden rund 2.200 Menschen getötet und es gab einen Schaden von 17 Millionen Dollar. Es war die erste Katastrophe, bei der das Amerikanische Rote Kreuz unter der Leitung von Clara Barton eingesetzt wurde. Hilfe für die Opfer kam aus den ganzen Vereinigten Staaten und aus 18 ausländischen Staaten. Es war eine der größten Katastrophen in der amerikanischen Geschichte. (de)
- The South Fork Dam was an earthenwork dam forming Lake Conemaugh (formerly Western Reservoir, also known as the Old Reservoir and Three Mile Dam, a misnomer), an artificial body of water near South Fork, Pennsylvania, United States. On May 31, 1889, the South Fork Dam failed catastrophically and 20 million tons of water from Lake Conemaugh burst, through and raced 14 miles (23 km) downstream, causing the Johnstown Flood. The South Fork Dam was originally built between 1838–1853 by the Commonwealth of Pennsylvania as part of the canal system to be used as a reservoir for the state's Main Line of Public Works canal basin in Johnstown. It was abandoned by the commonwealth, sold to the Pennsylvania Railroad, and sold again to private interests. The dam was 72 feet (22 m) high and 931 feet (284 m) long. Between 1881 when the South Fork Fishing and Hunting Club was opened, and 1889, the dam frequently sprung leaks. It was patched, mostly with mud and straw. Additionally, a previous owner had removed and sold for scrap the three cast iron discharge pipes that previously allowed a controlled release of water. There had been some speculation as to the dam's integrity, and concerns had been raised by the head of the Cambria Iron Works downstream in Johnstown. Before the flood, speculators had bought the abandoned reservoir, made less than well-engineered repairs to the old dam, raised the lake level, built cottages and a clubhouse, and created the South Fork Fishing and Hunting Club. Members of this exclusive and secretive retreat in the mountains were 61 wealthy Pittsburgh steel and coal financiers and industrialists, including Andrew Carnegie, Andrew Mellon, Philander Knox, John George Alexander Leishman, and Henry Clay Frick. Daniel Johnson Morrell, of the Cambria Iron Works of Johnstown, also became a member, ostensibly to monitor the condition of the dam. (en)
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- Die South-Fork-Talsperre mit ihrem Stausee Lake Conemaugh lag nahe im US-Bundesstaat Pennsylvania nahe dem heutigen . Am 31. Mai 1889 versagte der Staudamm nach heftigen, mehrere Tage andauernden Regenfällen, worauf 20 Millionen Kubikmeter Wasser 23 Kilometer talabwärts rasten und in Johnstown eine verheerende Flut verursachten. Dabei wurden rund 2.200 Menschen getötet und es gab einen Schaden von 17 Millionen Dollar. Es war die erste Katastrophe, bei der das Amerikanische Rote Kreuz unter der Leitung von Clara Barton eingesetzt wurde. Hilfe für die Opfer kam aus den ganzen Vereinigten Staaten und aus 18 ausländischen Staaten. Es war eine der größten Katastrophen in der amerikanischen Geschichte. (de)
- The South Fork Dam was an earthenwork dam forming Lake Conemaugh (formerly Western Reservoir, also known as the Old Reservoir and Three Mile Dam, a misnomer), an artificial body of water near South Fork, Pennsylvania, United States. On May 31, 1889, the South Fork Dam failed catastrophically and 20 million tons of water from Lake Conemaugh burst, through and raced 14 miles (23 km) downstream, causing the Johnstown Flood. (en)
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