width at the top for a similar purpose, the construction of which was were discovered. 3. Waterfalls can produce negative is 14 ft., and the profile of the section has been de- at one time strongly urged, but is at present held in falls of potential in a valley, and even to considerable signed in… … THE GREAT CONCRETE DAM AT BEETALOO, AUSTRALIA. the by-wash, which is 200 ft. wide, is 5 ft. below the dam, on the line of the Croton water works of New observed on the 16th, 18th, and 20th July, 1890, the crest of the dam. The reservoir behind the dam, when York City. positive fall of potential,…
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