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Sentinel Benchmark

Sentinel Benchmark

A Global Positioning System setup on a benchmark on the top of the NOAA Sentinel at Shell Beach, Louisiana. NOAA Sentinels are water-level observing stations which have been strengthened to deliver real-time storm tide data during severe coastal events. Built to withstand category four hurricanes, these structures maintain an incredible presence, given their size and stature, along the Gulf coast.

Sentinel Benchmark

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