A 9-inch fiberglass Parshall Flume with an inlet staged end adapter for Little Rock Air Force Base.  The end adapter is curved to fit against the wall of an existing 8-foot diameter concrete manhole.  

Staged end adapters are a practical solution to the need to conditon or control the flow of water into or out of a flume in existing manholes.  The staged end adapters are molded off of our standard end adapter molds and can be adapted to a number of different mahhole diameters.  

On the right side - looking down the flume in the direction of flow - a staff gauge has been mounted to allow the operator to take a quick reading of the level / flow in the flume.