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資料更新日期 113-06-01 23:00
Ladybower Reservoir. / 53.383°N 1.717°W / 53.383; -1.717. 1 Shore length is not a well-defined measure. Ladybower Reservoir is a large Y-shaped, artificial reservoir, the lowest of three in the Upper Derwent Valley in Derbyshire, England. The River Ashop flows into the reservoir from the west; the River Derwent flows south, initially ...
April 8, 1981 [4] Designated NHL. August 20, 1985 [5] Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D. Roosevelt.
