Mareómetro de Portugalete, Maritime measuring instrument in Portugalete, Spain
The gauge device measures water levels through a system where water enters a well, making a float rise and fall according to height variations.
The tide gauge was installed in 1883 at the end of Churruca pier, next to the former signal tower to assist maritime navigation.
The device manufactured by Borrel-Wagner in Paris features a pressure-based mechanism that records data through a needle moving across a clock-like sphere.
The Port Authority of Bilbao maintains three operational tide gauges at Santurce docks, providing data to the REDMAR Network since 1992.
After years without maintenance, the Port Authority of Bilbao restored the historical instrument and reopened it on March 2, 2000.
Location: Portugalete
GPS coordinates: 43.32599,-3.02128
Latest update: March 2, 2025 23:04
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