When was Tygart Lake Dam completed, making it the highest concrete gravity dam east of the Mississippi?

Tygart Lake Dam was completed in 1938, and it is significant because it was the highest concrete gravity dam east of the Mississippi River at the time of its construction. This designation reflects the engineering achievement of the dam, showcasing advancements in dam design and construction methods during the period. The dam serves important functions, including flood control, recreation, and municipal and industrial water supply, which contribute to its historical and contemporary significance in West Virginia. The timeline of construction is crucial, as it marks an important development in civil engineering in the region and highlights the advancements made during the late 1930s, just before the onset of World War II.