17th Street Canal

17th Street Canal
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Name	17th Street Canal
Location	New Orleans, Louisiana
Country	United States
State	Louisiana
City	New Orleans

17th Street Canal is a drainage canal in New Orleans, Louisiana, connecting urban canals and pumping infrastructure to Lake Pontchartrain and the Inner Harbor Navigation Canal. The canal has been central to drainage, navigation, and flood control efforts involving local, state, and federal entities, intersecting with major events such as Hurricane Katrina and long-standing projects by the United States Army Corps of Engineers. It is associated with neighboring infrastructure and institutions across Orleans Parish and adjacent jurisdictions.

History

The canal's development traces to 19th-century urban expansion and drainage schemes tied to the Mississippi River levee system, the New Orleans drainage initiatives, and plantation-era practices. Early municipal efforts linked the canal to projects like the Carrollton Canal upgrades and interactions with the Pontchartrain Railroad corridor. In the 20th century, interactions with agencies such as the U.S. Army Corps of Engineers, the Flood Control Act of 1928 implementations, and the Mr. Flood suit era policies shaped maintenance and design. Key planning episodes involved collaboration between the New Orleans Sewerage and Water Board, Orleans Parish, and the State of Louisiana, while nearby urban changes overlapped with developments at City Park (New Orleans), Metairie Ridge, and the Lakeview, New Orleans neighborhood. Historical episodes linked to storms including Hurricane Betsy (1965), Tropical Storm Agnes (1972), and regional responses influenced later federal projects like post-Hurricane Camille and pre-Hurricane Katrina modifications.

Geography and Hydrology

Geographically the canal lies within the northern sector of New Orleans bordering Lakeview, New Orleans, Mid-City, New Orleans, and the Lakefront. It connects with the Canal Boulevard, the Pontchartrain Basin, and the Inner Harbor Navigation Canal (commonly associated with the industrial waterway linking the Port of New Orleans). Hydrologic behavior involves interactions with Lake Pontchartrain, wind-driven surge phenomena observed during events like Hurricane Isaac (2012), tidal influences, and regional subsidence patterns noted in the Mississippi River Delta. Groundwater and soil conditions reflect regional alluvial deposits comparable to those studied in the Atchafalaya Basin, with peat layers and clay strata affecting levee stability. Nearby transportation corridors such as U.S. Route 90 and railways influenced urban runoff routing, while adjacent green spaces including New Orleans City Park affect local recharge and overland flow.

Infrastructure and Flood Control Measures

Structural elements include floodwalls, earthen levees, pumping stations, and movable gates operated by entities like the New Orleans Sewerage and Water Board and the U.S. Army Corps of Engineers New Orleans District. Major pumps at the 17th Street Canal Pumping Station interface with regional drainage maintained as part of the Lake Pontchartrain Basin Foundation considerations and the Greater New Orleans Urban Water Plan discussions. Engineering responses over decades referenced standards from the American Society of Civil Engineers and federal guidance under the National Flood Insurance Program. Interactions with navigation interests tied to the Port of New Orleans and regulatory frameworks involving the Environmental Protection Agency shaped project approvals. Maintenance and inspection cycles involved contracts with private firms and oversight by entities such as the Louisiana Department of Transportation and Development and the Federal Emergency Management Agency in hazard mitigation funding.

Role in Hurricane Katrina and 2005 Flooding

During Hurricane Katrina the canal's floodwalls failed, contributing to catastrophic inundation in Lakeview, New Orleans, Pontchartrain Park, and adjacent neighborhoods. The event prompted emergency responses coordinated with FEMA, the National Guard (United States), and municipal agencies including Mayor Ray Nagin's administration at the time, while national media outlets and academic institutions like Tulane University and Louisiana State University conducted analyses. The failures were set against prior storm performance records including Hurricane Betsy and engineering debates around surge modeling practices used by the U.S. Army Corps of Engineers. Consequences included large-scale displacement addressed by policies involving the Road Home Program, Housing and Urban Development initiatives, and reconstruction efforts associated with the Bring New Orleans Back Commission.

Investigations and Litigation

Post-Katrina investigations examined design, construction, and inspection of the canal's defenses, involving investigative work by the Independent Levee Investigation Team, the National Academy of Sciences, and the Interagency Performance Evaluation Task Force. Litigation included claims against the United States under the Federal Tort Claims Act, lawsuits involving the U.S. Army Corps of Engineers and local entities, and settlements negotiated in federal courts in the Eastern District of Louisiana. Scholarly and technical reports from institutions like the Association of State Floodplain Managers and engineering firms informed expert testimony, while advocacy groups including Common Ground Relief and the Southeast Louisiana Flood Protection Authority participated in public hearings and policy debates.

Repairs, Mitigation, and Recent Developments

Subsequent repair and mitigation work incorporated projects such as increased floodwall buttressing, enhanced pump capacity, and integration into the Hurricane and Storm Damage Risk Reduction System overseen by the U.S. Army Corps of Engineers New Orleans District. Funding and policy initiatives involved FEMA hazard mitigation grants, state appropriations from the Louisiana Recovery Authority, and resilience planning from municipal programs like Bring Back New Orleans Commission derivatives and the Resilient New Orleans strategy. Ongoing monitoring engages research partners including Tulane University School of Engineering, Louisiana State University Hurricane Center, and non‑profits such as the Greater New Orleans Foundation. Recent work addresses sea level rise projections from the National Oceanic and Atmospheric Administration, regional subsidence studies tied to the Louisiana Coastal Protection and Restoration Authority, and cross‑agency coordination with the Environmental Protection Agency on stormwater and ecosystem restoration initiatives.

Category:Canals in Louisiana Category:History of New Orleans Category:Flood control in the United States