On November 20, 1980, a Texaco oil drilling rig operating on Lake Peigneur in Louisiana accidentally drilled a 14-inch drill bit through the roof of the Diamond Crystal Salt Company mine, located 1,300 feet below the lake bed. A simple navigation mistake had misaligned the coordinate system. What began as a small trickling leak rapidly escalated into an unstoppable hydraulic catastrophe.
As freshwater entered the salt mine, it dissolved the solid sodium chloride walls instantly, widening the opening exponentially every second. The physical mechanism governing this disaster was a rapid feedback loop between fluid dynamics and chemical dissolution. As the aperture expanded, the flow rate increased dramatically, transforming the 13-foot-deep lake into a high-velocity drain.
The rushing water created a gigantic, 150-foot-wide whirlpool that consumed the drilling barge, eleven barges, a tugboat, 65 acres of surrounding land, and entire botanical gardens. The pressure differential between the atmosphere and the emptying cavern compressed air inside the mine shafts; when this compressed air escaped, 400-foot geysers erupted from the mine shafts. Once the lake emptied completely, the lake bed dropped far below sea level.
This sudden depth gradient caused the Delcambre Canal—which normally drained Lake Peigneur into the Gulf of Mexico—to reverse direction. Millions of gallons of salty water from the Gulf flowed backward inland, creating the tallest waterfall in Louisiana history at 150 feet, permanently transforming Lake Peigneur from a shallow freshwater environment into a deep brackish bayou.