Bonnet Carré Spillway until 1883. The Bonnet Carré Spillway consists of two basic components: a control structure along the east bank of the Mississippi River and a floodway that transfers the diverted flood waters to the lake. The control structure is a mechanically-controlled concrete weir that extends for over a mile and a half parallel to the river. When opened, the control structure allows overflow volume to flow into Lake Pontchartrain. The lake's opening to the gulf is sufficient to absorb and dissipate any conceivable volume of flood flow. Thus, the flood surcharge portion of the water from the Mississippi is divided between
Morganza, Maryland Morganza, Maryland Morganza is an unincorporated community in St. Mary's County, Maryland, United States. Today, it is home to a few homes and St. Joseph's Catholic Church, which had been in the area since 1759. The current church on Route 5 at the top of the hill was built in 1860 and the Morganza Post Office was established there in 1867, named after the Morgan family. The post office is now located across from Chopticon High School. Morganza was home to two public one-room school houses and the church opened a parochial school for white students in 1926 and for