LA, Philadelphia engineers conduct hydraulic steel structure inspection at Sepulveda Dam
An engineer safely ropes from the crest of Sepulveda Dam into the Los Angeles River, March 22, 2022, in Van Nuys, California. Workers first had to open ventilation shafts and test the air quality inside the structure before they could enter. The dam – constructed by the U.S. Army Corps of Engineers in response to the Los Angeles floods of 1938 – underwent a hydraulic steel structure inspection March 22-23. (Photo by John Reese, U.S. Army Corps of Engineers Los Angeles District)

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Photo by: John Reese |  VIRIN: 220322-A-ED169-1013.JPG