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00The new tower is approximately 115 feet high, with an inside diameter of 32 feet. It also includes six tiers of valves. The new outlet tunnel is 541 feet long, with a finished diameter of 17 feet, 10 inches. The shaft is 165 feet deep, with a finished diameter of 48 feet. It will include four large sliding gates to control delivery of water downstream. The underwater approach channel is approximately 80 feet wide at its base and 450 feet long, with side slopes up to 80 feet high.
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