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Laurel Run Dam
The Laurel Run Dam, also known as Laurel Run Dam No. 2, was an earthen embankment dam that failed during the 1977 Johnstown flood. It had the largest reservoir of seven dams to fail between July 19 and 20, 1977 and caused the most fatalities of the two that did. The dam failed in the early morning of July 20 after period of heavy rain, causing of water to flood downstream Tanneryville, killing 40 people.
== History ==
During the 1860s, the Johnstown Water Company was planning new infrastructure to meet the municipal water needs of Johnstown, Pennsylvania. Laurel Run and Wild Cat Creeks were initially selected as sources and a dam was constructed on Laurel Run Creek in 1869 that impounded the Laurel Run reservoir No. 1. Water was transferred from the reservoir through an 18,000-foot 16-inch cast iron pipe to Main and Market Streets in the old Johnstown Borough. Due to contamination and larger reservoirs being built, the Laurel Run reservoir No. 1 was abandoned in 1910.〔(【引用サイトリンク】url=http://webpages.charter.net/gjwa/histc01.htm )〕
After the Saltlick Reservoir was completed, workers and equipment were moved to construct the new Laurel Run reservoir No. 2 in 1915. The dam and reservoir were complete in 1919 and held a capacity of of water. The dam was also designed for future enlargement.〔(【引用サイトリンク】url=http://webpages.charter.net/gjwa/histf02.htm )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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