Ensign Marty Conricote checking an ADR water-level gauge on Lake Superior. The gauge to the left was operated by the U.S. Army Corps of Engineers. These gauges were in a Lake Superior harbor.
Image ID: cgs00858, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: Wisconsin Photo Date: 1983 Photographer: Commander George Leigh, NOAA Corps (ret.) • High Resolution Photo Available
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