The dam was built 1933–38. Its width at the top is Шаблон:Convert and Шаблон:Convert at the bottom. It is Шаблон:Convert above the bedrock and Шаблон:Convert above Beaver Brook. There was 2.5 million cubic yards of fill used in the construction and the dam contains 31 caissons. The elevation is Шаблон:Convert MSL.
History
The dam was named after X. Henry Goodnough, who was chair of the Boston Metropolitan Water and Sewer Board during 1921. This dike is part of the Quabbin Reservoir facility. This dike is sometimes called the Quabbin Dike, however its name has never been changed from its original and, in fact, remains as originally named, imprinted on the plaques and signs at the site in the Quabbin Reservoir reservation. Frank E. Winsor was chief engineer of the Board from 1926 until his death in 1939 and as such was deeply involved in the design construction of Goodnough Dike as well as Winsor Dam and Quabbin Reservoir
The Quabbin Reservoir is one of the largest fabricated public water supplies in the United States. Created in the 1930s by the construction of two huge earthen dams, the Winsor Dam, and the Goodnough Dike, the reservoir is fed by the Swift River, and seasonally the Ware River. Four towns were flooded in the Swift River Valley. Construction of the reservoir remains a great engineering feat and Quabbin is one of the largest unfiltered water supplies in the world. The reservoir is Шаблон:Convert long and has Шаблон:Convert of shoreline including Шаблон:Convert along the reservoir's 60 islands. Quabbin collects an average of one-half of the precipitation that falls on its watershed. When full, the reservoir holds about Шаблон:Convert of water.