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Originally Posted by OldDartmouthMark
(As an aside, I'm wondering how they kept the water tower from freezing up during wintertime... but that's another discussion for another time).
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I'm not sure what the story is with that water tower. But old railroad water tanks sometimes used heaters at the base to heat water being pumped into the tank. They also could use a pump in the tank to keep water circulating. But my understanding is that most tanks did not have such appliances. As in a lake, the water would rarely freeze completely, especially if the tank was in regular use, meaning water would always be circulating naturally.