Morganza Spillway of the Morganza Floodway closed. In March 1997, the river water flow at Baton Rouge reached () per second. However, the flow rate never reached the threshold of () per second for opening Morganza, and residents of Sicily Island, Louisiana, became angry that the spillway was not opened to prevent flooding in their homes. In March–April 2008, officials considered but declined to open the spillway gates. While the spillway gates remained closed then, flooding still occurred in part of the Morganza floodway when the Mississippi River crested higher than levees near the spillway. Local residents and National Guard troops attempted
Flow control structure dam across a shallow stream, forcing all of the water to one side to allow it to be easily collected in a canal. This can keep a canal full even with very low flows in a stream. Another simple device is a series of concrete piers installed in a spillway to slow down the descending water so that it does not cause damage at the bottom of the spillway. Flow control structure A flow control structure is a device that alters the flow of water in a stream, drainage channel or pipe. As a group these are passive structures since