Kinzu Dam and outfall @ Warren, PA

The Kinzua Dam, on the Allegheny River in Warren County, Pennsylvania, is one of the largest dams in the United States east of the Mississippi River. It is located within the 500,000-acre (200,000 ha) Allegheny National Forest.

 

In 1936, a major flood struck the Pittsburgh metropolitan area and caused widespread damage. This prompted Congress to pass the Flood Control Acts of 1936 and 1938, authorizing the construction of a dam on the Allegheny River. Construction of the dam was not begun by the US Army Corps of Engineers until 1960. It was completed in 1965, and the filling of the reservoir continued until 1967.

 

By then, considerable opposition to the dam had developed, particularly among the Seneca Nation of Indians based in New York. The proposed flooding of lands behind the dam to create a lake for recreation and hydropower would make them lose most of the historic Cornplanter Tract in Pennsylvania as well as numerous communities and thousands of acres of fertile farmland in New York. More than 600 families were displaced by the project and forced to relocate.

 

The main purpose of the dam was flood control on the Allegheny River. Kinzua controls drainage on a watershed of 2,180 square miles (5,650 km2), an area twice the size of the state of Rhode Island. According to the Corps of Engineers, side benefits derived from the dam would include drought control, hydroelectric power production, and recreation. The hydroelectric power is distributed largely to Pittsburgh.

 

According to the US Army Corps of Engineers, Kinzua more than paid for itself in 1972 when tropical storm Agnes dumped continual heavy rains on the watershed, bringing the reservoir to within three feet of its maximum storage capacity. Downstream flood damages were avoided of an estimated $247 million. The dam at Kinzua has prevented an estimated $1 billion in flood damages since it became operational. (Wikipedia)

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Uploaded on August 6, 2022
Taken on August 3, 2022