Orleans as measured from Algiers Point — is where the river branches off into separate passes into the Gulf. The only part of the river operating under any restrictions was from the main stem of the Mississippi River channel through Southwest Pass to the Gulf. That section was limited to daylight traffic. The Coast Guard continued restoring Aids to Navigation (AToN) to allow night transits, giving first priority to those AToNs described by pilots as being most critical. The Gulf Intracoastal Waterway was opened from Texas to Florida using Baptiste Collette Bayou as an alternative to the IHNC. The GIWW reach from Baptiste Collette to Pascagoula was limited to 9.5' draft, versus the 12' authorized. Caution was recommended for transit. The Inner Harbor Navigation Canal (IHNC) Lock became operational but was still not operating due to bridge closures and sunken barges, the removal of which was anticipated to take until mid-week. The Mississippi River Gulf Outlet was closed to deep draft vessels. The inland portion was serving as an alternative route to the GIWW due to closure of the IHNC for shallow draft vessels. Preliminary surveys indicated a controlling depth of 27'. Port Fourchon sustained significant damage, but was operating to a limited extent. Sunken vessels were not blocking the channel. Tiger Pass was shoaled to less than 6'. This channel, authorized to 14' provides a shorter route for vessels traveling to the west from the Mississippi River near the mouth. Primarily used by fishing and supply vessels. Dredging was planned. The Army Corps of Engineers conducted preliminary surveys for Atchafalaya, Houma, and other channels. NOAA continued its surveys of the Mississippi River to verify the Corps centerline survey results. See also Levee failures in Greater New Orleans, 2005 U.S. Army Corps of Engineers civil works controversies U.S. Army Corps of Engineers civil works controversies (New Orleans) Flood Control Act of 1965 17th Street Canal Drainage in New Orleans Hurricane Katrina Hurricane Rita ING 4727 Industrial Canal Inner Harbor Navigation Canal (IHNC) Seabrook Floodgate Structure London Avenue Canal References External links Independent Levee Investigation Team Report - U of California Berkeley Levees.org - Non profit in New Orleans holding the Army Corps accountable for their flood protection nationwide Hurricane Katrina recovery in New Orleans