New Orleans Outfall Canals

New Orleans Outfall Canals
The primary outfall canals in New Orleans: the 17th Street, Orleans Avenue, and London Avenue canals.
Location	New Orleans, Louisiana
Country	United States
Specifications
Length	13 miles (21 km)
Locks	Interim and permanent gated closure structures installed post-Katrina
Status	In operation
Navigation authority	U.S. Army Corps of Engineers
History
Principal engineer	U.S. Army Corps of Engineers
Date completed	19th century (original construction)
Date restored	Post-Hurricane Katrina remediation completed in 2011
Geography
Start point	Various pump stations in New Orleans (Pump stations include Pump Station 6 (17th Street Canal), Pump Station 7 (Orleans Avenue Canal), and Pump Station 3 (London Avenue Canal))
End point	Lake Pontchartrain (Canals discharge into Lake Pontchartrain)

There are three outfall canals in New Orleans, Louisiana – the 17th Street, Orleans Avenue and London Avenue canals. These canals are a critical element of New Orleans’ flood control system, serving as drainage conduits for much of the city. There are 13 miles (21 km) of levees and floodwalls that line the sides of the canals. The 17th Street Canal is the largest and most important drainage canal and is capable of conveying more water than the Orleans Avenue and London Avenue Canals combined.^[1]

The 17th Street Canal extends 13,500 feet (4,100 m) north from Pump Station 6 to Lake Pontchartrain along the boundary of Orleans and Jefferson parishes. The Orleans Avenue Canal, between the 17th Street and London Avenue canals, runs approximately 11,000 feet (3,400 m) from Pump Station 7 to Lake Pontchartrain. The London Avenue Canal extends 15,000 feet (4,600 m) north from Pump Station 3 to Lake Pontchartrain about halfway between the Orleans Avenue Canal and the Inner Harbor Navigation Canal (also known locally as the Industrial Canal).^[2]