Navigation Notices - Home

Welcome to Notices To Navigation Interest

The Notices To Navigation Interests (NTNI Notices) website contains navigation notices and policies issued by US Army Corps of Engineers Districts with a waterway navigation mission. These documents are disseminated according to EP 1130-2-520, Chapter 2, to inform mariners of information describing events that affect waterway navigation such as maintenance projects, hazards to navigation, and other pertinent information. The notices are removed from the page seven days past the end date on the latest amendment. The site also has Policy Notices that remain in place until superseded. This site does not contain all notices such as those published by other Federal agencies. Reference: The US Coast Guard Local Notice To Mariners site at: http://www.navcen.uscg.gov/?pageName=lnmMain
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Navigation Notices

Control NbrAmendment NbrTitleBegin DateEnd DateWaterwaysDistrict NameAttachments
20545014006-1LOCK RESTRICTION Lock and Dam 9, UMR Mile 647.9 IMMEDIATELYUNTIL FURTHER NOTICEST. PAUL DISTRICT
210190210107-1AMENDMENT - Navigation Notice 210107, MVN 25-28 DREDGING OPERATIONS Mississippi River - Vicinity of Southwest Pass, Pass A Loutre, and South Pass IMMEDIATELY2025/03/20NEW ORLEANS DISTRICT
211568Lock Closure Lockport Lock River Mile 2912026/03/312026/05/20CHICAGO DISTRICT
212641211009-3Auxiliary Lock Annual Maintenance Period2026/03/022026/03/13SEATTLE DISTRICT
211845211831-12026 Portland Annual Navigation Lock Maintenance Outage2026/03/012026/03/22PORTLAND DISTRICT
2120092026 WALLA WALLA DISTRICT NAVIGATION LOCK MAINTENANCE OUTAGE2026/02/212026/03/29WALLA WALLA DISTRICT
212705FORT LOUDOUN LOCK INTERMITTENT CLOSURES TENNESSEE RIVER MILE 602.3 2026/01/272026/02/18NASHVILLE DISTRICTNav Notice 25-41.pdf
212559OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL 2026/01/162026/03/25DETROIT DISTRICT
212568BLACK WARRIOR TOMBIGBEE WATERWAY, ALABAMA MODIFIED OPERATING HOURS AT HOLT LOCK & DAM RIVER MILE 3472026/01/122026/10/01MOBILE DISTRICT
212707BLACK WARRIOR TOMBIGBEE WATERWAY, ALABAMA MODIFIED OPERATING HOURS AND INDUSTRY INFORMATION CALL FOR HOLT LOCK & DAM RIVER MILE 3472026/01/122026/09/26MOBILE DISTRICT
212613LEVEL OF SERVICE CHANGE LONDON LOCKS & DAM KANAWHA RIVER, MILE 82.82026/01/112027/01/01HUNTINGTON DISTRICT
212801GULFPORT, MISSISSIPPI DREDGING OPERATIONS2026/01/102026/03/11MOBILE DISTRICT
212546OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL 2026/01/062026/01/07DETROIT DISTRICT
212679GIWW Mile 223.1 US 98 Bridge Construction – Channel Closure2026/01/052026/03/16MOBILE DISTRICT
212800FLOOD GATES CLOSURE Gulf Intracoastal Waterway, Texas Brazos River Flood Gates, Texas 2026/01/052026/02/27GALVESTON DISTRICT
212803NAVIGATION PASS CLOSED MONTGOMERY POINT LOCK AND DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/31UNTIL FURTHER NOTICELITTLE ROCK DISTRICT
212739MOBILE HARBOR, ALABAMA TEMPORARY OBSTRUCTION – MOBILE RIVER2025/12/292025/12/29MOBILE DISTRICT
212804212802-1NAVIGATION PASS OPEN MONTGOMERY POINT LOCK AND DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/292025/12/31LITTLE ROCK DISTRICT
212702GULF INTRACOASTAL WATERWAY (GIWW), FLORIDA DREDGING OPERATIONS2025/12/272026/02/28MOBILE DISTRICT
212688212525-1AMENDMENT Notice to Navigation: 212525-1,212525_NTN-09_HSC_2025-12 Houston Ship Channel, Texas Morgans Point to Boggy Bayou, In Harris and Chambers Counties, Texas Maintenance Dredging 2025/12/252026/07/20GALVESTON DISTRICT
212699REPAIRS Gulf Intracoastal Waterway Inner Harbor Navigation Canal (IHNC) Lock2025/12/202025/12/20NEW ORLEANS DISTRICT
212710Debris Impacting Navigation -Temporary Outage at Bonneville Navigation Lock2025/12/192025/12/19PORTLAND DISTRICT
212706SAILING INSTRUCTION NM 237.1 to NM 238.3 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/18UNTIL FURTHER NOTICELITTLE ROCK DISTRICT
212683BILOXI HARBOR, MISSISSIPPI DREDGING OPERATIONS (Mississippi Sound)2025/12/172026/01/17MOBILE DISTRICT
212709212703-1Large Lock Emergency Closure2025/12/172025/12/18SEATTLE DISTRICT
212684BLACK WARRIOR/TOMBIGBEE RIVER, ALABAMA HOLT LOCK TEMPORARY CLOSURE RIVER MILE 3472025/12/162025/12/17MOBILE DISTRICT
212686SCHEDULED LOCK OUTAGE AT MCNARY NAVIGATION LOCK2025/12/162025/12/17WALLA WALLA DISTRICT
212700BLACK WARRIOR/TOMBIGBEE RIVER, ALABAMA SELDEN LOCK TEMPORARY CLOSURE RIVER MILE 2612025/12/162025/12/16MOBILE DISTRICT
211995MISSISSIPPI RIVER LOCK CLOSURE Lock and Dam 19, River Mile 364.22025/12/152026/03/14ROCK ISLAND DISTRICT
211996UPPER MISSISSIPPI WINTER LOCKAGE HOURS Lock & Dam No. 11, UMR 583.0 THROUGH Lock & Dam No. 22, UMR 301.22025/12/152026/03/14ROCK ISLAND DISTRICT
212687MOBILE, ALABAMA DREDGING OPERATIONS (Theodore Ship Channel)2025/12/152026/01/16MOBILE DISTRICT
212580BLACK WARRIOR TOMBIGBEE WATERWAY, ALABAMA Christmas Parade at River Mile 342 to River Mile 3382025/12/132025/12/14MOBILE DISTRICT
212619BLACK WARRIOR TOMBIGBEE WATERWAY, ALABAMA Christmas Parade at River Mile 342 to River Mile 338 is CANCELLED2025/12/132025/12/14MOBILE DISTRICT
212681REPAIRS Gulf Intracoastal Waterway Inner Harbor Navigation Canal (IHNC) Lock2025/12/132025/12/13NEW ORLEANS DISTRICT
212685TOMBIGBEE RIVER, ALABAMA CHANNEL OBSTRUCTION UPDATE ST. ELMOS BAR, MILE 952025/12/122025/12/15MOBILE DISTRICT
212611PANAMA CITY HARBOR – ENTRANCE CHANNEL DREDGING OPERATIONS2025/12/112025/12/27MOBILE DISTRICT
212659DREDGEING OPERATIONS GULF INTRACOASTAL WATERWAY MORGAN CITY-PORT ALLEN ALTERNATE ROUTE 2025/12/112025/12/21NEW ORLEANS DISTRICT
212566Braddock Locks and Dam, Monongahela River Mile Marker 11.3. Closure of Both Chambers2025/12/102025/12/11PITTSBURGH DISTRICT
212624NICKAJACK LOCK TOW HAULAGE REPAIR TENNESSEE RIVER MILE 424.7 2025/12/092026/01/24NASHVILLE DISTRICTNav Notice 25-40 .pdf
212646CORRECTION: SCHEDULED LOCK CLOSURE MONTGOMERY POINT LOCK & DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/092025/12/09LITTLE ROCK DISTRICT
212647TOMBIGBEE RIVER, ALABAMA CHANNEL OBSTRUCTION UPDATE ST. ELMOS BAR, MILE 952025/12/09UNTIL FURTHER NOTICEMOBILE DISTRICT
212200Lock Closures Upper Mississippi River2025/12/082026/03/16ST. PAUL DISTRICT
212615212582-1AMENDMENT TO NAVIGATION NOTICE 212582, 26-6: SCHEDULED LOCK OUTAGE AT MCNARY NAVIGATION LOCK 2025/12/082025/12/09WALLA WALLA DISTRICT
212645SCHEDULED LOCK CLOSURE MONTGOMERY POINT LOCK & DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/082025/12/08LITTLE ROCK DISTRICT
212643LOCK REOPENED – WIDTH RESTRICTIONS MONTGOMERY POINT LOCK & DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/062025/12/07LITTLE ROCK DISTRICT
212644WIDTH RESTRICTION LIFTED MONTGOMERY POINT LOCK & DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/062025/12/07LITTLE ROCK DISTRICT
212560LOCK CLOSURE Brandon Road Lock and Dam, RM 286.02025/12/052025/12/05ROCK ISLAND DISTRICT
212622212621-1NAVIGATION PASS CLOSURE MONTGOMERY POINT LOCK AND DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/052025/12/06LITTLE ROCK DISTRICT
212623SAILING INSTRUCTIONS LIFTED DOWNSTREAM APPROACH AT NORRELL LOCK AND DAM (NM 10.3) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/052025/12/06LITTLE ROCK DISTRICT
212642212620-1NOTICE OF LOCK CLOSURE MONTGOMERY POINT LOCK AND DAM (NM 0.5) MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM 2025/12/052025/12/06LITTLE ROCK DISTRICT
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