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• 15:08, 11 May 2026 [email protected] talk contribs created page On-Demand Webinar : The South Fork Dam Breach and Johnstown Flood of 1889: A Civil and Dam Engineering History of the USA’s Deadliest Dam Failure (Created page with "{{Trainings Template |author= <!-- Add author/publisher on blank line below--> Association of State Dam Safety Officials |year=<!-- Add publication year on blank line below--> 2025 |abstract= <!-- Add presentation summary on blank line below--> The 1889 breach of the South Fork Dam, which caused the infamous “Johnstown Flood,” remains the deadliest dam failure in US history. The Commonwealth of Pennsylvania built the dam in the mid-1800s as part of a cross-state tra...")