Install fiber optic cable to detect groundwater upwelling in small section of Newtown Creek Canal in New York City. The site has DNAPL contaminants.

At a New York study area 1.2 acres of sediment were monitored for evidence of groundwater seeps using a fiber optic distributed temperature sensor (DTS). A fiber optic cable was installed and monitored, providing 1.0 kilometers of cable laid out in six transects, each approximately 140 m in length and separated by 5-8 m. The DTS system recorded sediment temperatures at half-meter intervals every 20 minutes in September, 2019, yielding approximately 1.5 million temperature measurements during the study. Temperature data was analyzed through a suite of analytical methods to identify potential groundwater discharge locations.

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