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Lower Mississippi

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Lake Pontchartrain Calibration Site

Water Quality in Lake Pontchartrain and western Mississippi Sound during openings of Bonnet Carré Spillway

The Bonnet Carré Spillway, located about 28 miles northwest of New Orleans, Louisiana, was constructed in the early 1930s as part of an integrated flood-control structure for the lower Mississippi River Plain. The spillway is designed to divert water from the Mississippi River into Lake Pontchartrain, thus relieving pressure on levees downstream. Opening of the spillway occurs when measured...
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Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center, Gulf of Mexico, Mississippi River
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Water Quality in Lake Pontchartrain and western Mississippi Sound during openings of Bonnet Carré Spillway

The Bonnet Carré Spillway, located about 28 miles northwest of New Orleans, Louisiana, was constructed in the early 1930s as part of an integrated flood-control structure for the lower Mississippi River Plain. The spillway is designed to divert water from the Mississippi River into Lake Pontchartrain, thus relieving pressure on levees downstream. Opening of the spillway occurs when measured...
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