A submersible plow system was used to install 4,000 feet of DTS cable at the Gowanus Superfund site within New York City.  The study goal was to locate groundwater emerging from the canal sediment into the waterway.

Approximately 10 million independent temperature measurements were recorded over more than a month.  These data revealed clear groundwater discharge locations, as well as local relationships between groundwater flow and canal water level.

The SelkerMetrics study identified seep locations and variations in flows through time.  These findings supported a $1.5 billion remediation design and validated a groundwater model of the area.