Tide indicator at Fort Hamilton. The pointer moves around the dial indicating the height of tides referred to mean low water. The arrow points upward when the tide is rising and downward when the tide is falling. The indicator is showing slack water at high tide in this image.

Image ID: cgs01630, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: New York, Fort Hamilton
Photo Date: 1900 circa


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