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Show GREATEST DAM ON EARTH. Fifteen year ago the highest dam In existence was the Furrens dam (in France), the ttotal height of which was 170 feet. Since then three very much larger dams nave been built in the United States. These are the Croton dam in New Tork. the Clinton waterworks water-works dam at Boston, and the waterworks water-works dam at Denver, on the south fork of South Platte river. Each of these at present holds the record in one respect or another; the Denver dam is the highest in the world; the Clinton Impounds the largest amount of water- and the Croton dam contains the largest mass of masonry. But the Salt river dam In Arixona. when finished, will exceed each of these in its own capacity; it will be higher than Denver- will exceed the Croton dam in masonry; and impound twice as much water as all three dams put together. It will be.170 feet from foundation to parapet, will contain 300.000 cubic yards of masonry, and will impound more than a million acre-feet of water; that is more than enough to cover a million acres (1500 square miles), to a depth of one foot. It will form a lake twenty-five twenty-five miles long and one to two miles wide, covering an area of 14.000 acres. Its cost, with maintenance for ten years will be $3,000,000 or $4,000.000 "Greatest "Great-est Dam on Earth." by Crittenden Marriott, in November Technical World Magazine. |