Charleston harbor, South Carolina, is home to the nation's 23rd Physical Oceanographic Real-Time System (PORTS®). This NOAA system provides real-time information that determines bridge clearance measurements from special air gap sensors, as well as water level and meteorological information from long-term tide stations, providing users with critical data when transiting the harbor.

Officials from NOS's Center for Operational Oceanographic Products and Services (CO-OPS) and the South Carolina State Ports Authority dedicated the new system on June 27.

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