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![Looking down from the air gap sensor on the Don Holt Bridge to the water surface below cgs02677.jpg Looking down from the air gap sensor on the Don Holt Bridge to the water surface below](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs02677.jpg?itok=ZwsMJ3W8)
Description
Looking down from the air gap sensor on the Don Holt Bridge to the water surface below. This sensor is an intrinsic part of the Physical Oceanographic Real-Time System (PORTS). (Image credit: NOAA News, June 27, 2013)
Credit
NOAA News, June 27, 2013
Collection
Historic Coast & Geodetic Survey