Tide Gauge

Until 1992 the Port of London Authority maintained a gauge at this fort to measure the state of the tide in the Thames Estuary. As sea levels rise and the south east tilts slowly into the sea, these observations assume even greater importance. Newer technology on a nearby buoy now relays this information more efficiently. A bank of batteries, a generator, oil tanks, diesel and other smaller clues remain, as to how it was all done before.