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Low (top) and high (bottom) flow video images, Frankford Creek, PA

September 2020 (approx.)

Detailed Description

Still images from videos of surface water flow overlaid with velocity vectors during low (top) and high (bottom) flow conditions in Frankford Creek, Philadelphia, Pennsylvania, September 2020. These videos were processed using large-scale particle imaging velocimetry (LSPIV) to estimate streamflow in a location where standard methods are inadequate. 


Public Domain.