It provides flood protection for the most populated areas on the west bank of the Mississippi River in Jefferson and Orleans Parishes by building, operating and maintaining flood control systems.
The Authority is made up of two levee districts:
the West Jefferson Levee District, which serves the west bank portions of Jefferson Parish, and the Algiers Levee District, which serves the west bank portions of Orleans Parish. Its jurisdiction covers approximately 47 miles of hurricane flood protection levees, floodwalls and floodgates and approximately 33 miles of Mississippi River levees and floodwalls.
A seven-member board of commissioners oversees SLFPA-West. Appointed by the governor, the commissioners must fulfill a board quota as either residents of Jefferson or Orleans Parishes or be professionals in engineering and other fields.