U.S. Army Corps of Engineers Mississippi Valley Division Commander Brig. Gen. Duke DeLuca, St. Louis District Commander Col. Chris Hall and Ashley Cox, St. Louis District river engineer discuss the advancements that have been made in river engineering with the use of Hydrologic Sediment Response Models at the St. Louis District's Applied River Engineering Center, Jan. 14. (Photo by USACE St. Louis District Public Affairs Office)

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Photo by: USACE St. Louis District |  VIRIN: 140114-A-CE999-007.JPG