On May 30th, 1889 storms struck the Conemaugh Valley in Cambria County, dumping an estimated 6-10 inches of rain on the region. Tributaries and creeks flooded their banks, swelling the Conemaugh River with raging currents and miscellaneous debris. Fourteen miles east of the bustling city of Johnstown concerns were escalating at the elite South Fork Fishing & Hunting Club where a former reservoir for the Mainline of Public Works turned recreational lake, began to rise to dangerous levels. Lake Conemaugh had been stripped of its fail-safes after the Pubic Works system was abandoned and had no way of relieving the rising floodwaters. Various efforts to mitigate the high water were considered but were too little, too late, in a last ditch effort messengers were dispatched to South Fork to report the dangerous situation to neighboring towns via telegraph.
By the afternoon of May 31st, Johnstown was already experiencing flooding in various areas but at approximately 3:10PM the situation grew far beyond what anyone could have ever imagined. The dam holding back Lake Conemaugh collapsed, releasing some 20 million tons of water into the Conemaugh River valley. Taking approximately 40 minutes to drain the lake, flood waters raged through the valley taking less than an hour to reach the city of the Johnstown picking up houses, trees and even a railroad viaduct in its course. By the time it hit Johnstown the wall of floodwater was estimated to be 60’ high in places and traveling at 40 miles per hour. The flood entered town in the areas of East Conemaugh and Woodvale leveling rail yards, tossing passenger trains and causing major damage to the Gautier Iron Works, picking up even more debris including barbed wire manufactured at the mills. Flood waters then ripped through the center of Johnstown which was hemmed in by the Stoney Creek and Conemaugh Rivers on the the valley floor becoming the epicenter of disaster. Spreading across the city the floodwaters washed back and forth forcing debris against the PRR stone viaduct near the Cambria Iron Works creating further peril during the situation. The unintended dam became engulfed in flames creating a 70’ high wall that had to eventually be blasted away after waters receded.
Efforts were mobilized immediately to provide disaster relief and recovery. The Pennsylvania Railroad restored the railroad west to Pittsburgh and was running trains by June 2nd bringing in manpower and supplies. Clara Barton, a nurse and founder of the Red Cross arrived on June 5th, staying for more than five months to lead the group’s first major disaster relief effort. The flood, the result of the of the South Fork Hunting Club’s negligence to properly maintain the earthen dam ultimately took 2,209 lives, 16,000 homes and cost $17 million in property damage, making the Great Flood of 1889 one of the worst floods to hit the US in the 19th Century.