When winter comes to New England, the seaplane base at Alton Bay, (B18) on Lake Winnepausakee starts to freeze.  Local volunteers watch it closely for an ice thickness of 12 inches – the magic number that triggers contact with the NHDOT Aeronautical Division. This is normally late January or early February. Once NHDOT gives the green light, volunteers plow a  2600′ x…

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