Researchers at the U.S. Army Engineer Research and Development Center constructed a model of the filling and emptying system of the Montgomery Lock on the Ohio River to test designs for a new auxiliary lock structure. The model allows the team to take a closer look at the details inside the lock, like the intakes, the culvert layout, the outlets and valve operation times. (U.S. Army Corps of Engineers photo) CHL,Coastal and Hydraulics Laboratory,ERDC,Engineer Research and Development Center,Pittsburgh District,USACE,

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