Pittsburgh District’s Water Quality team conducts first “spring pulse”
Abby Yancy, a Ph.D. student with the University of Pittsburgh researching nitrogen isotopes, preserves a water sample collected from the Allegheny River in Warren, Pennsylvania, March 31, 2023. As part of a lab project, Yancy and other university students collected water samples to maintain the samples’ integrity before transporting them to university labs. The students coordinated their testing window with the U.S. Army Corps of Engineers Pittsburgh District to collect unique samples gathered during a simulated spring pulse. (U.S. Army Corps of Engineers photo by Andrew Byrne)

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Photo by: Andrew Byrne |  VIRIN: 230331-A-XW512-1433.JPG