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 The site also has Policy Notices that remain in place until superseded.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
210107DREDGING OPERATIONS Mississippi River - Vicinity of Southwest Pass, Pass A Loutre, and South Pass IMMEDIATELYUNTIL FURTHER NOTICENEW ORLEANS 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
211009Auxiliary Lock Annual Maintenance Period2026/03/022026/03/13SEATTLE DISTRICT
2118312026 Portland Annual Navigation Lock Maintenance Outage2026/03/012026/03/22PORTLAND DISTRICT
211845211831-12026 Portland Annual Navigation Lock Maintenance Outage2026/03/012026/03/22PORTLAND DISTRICT
212199211009-2Auxiliary Lock Annual Maintenance Period2026/03/012026/03/12SEATTLE DISTRICT
211836211009-1Auxiliary Lock Annual Maintenance Period2026/02/252026/03/13SEATTLE DISTRICT
2120092026 WALLA WALLA DISTRICT NAVIGATION LOCK MAINTENANCE OUTAGE2026/02/212026/03/29WALLA WALLA 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
212200Lock Closures Upper Mississippi River2025/12/082026/03/16ST. PAUL DISTRICT
212519SCHEDULED LOCK OUTAGE AT MCNARY NAVIGATION LOCK2025/12/032025/12/04WALLA WALLA DISTRICT
212522212519-1SCHEDULED LOCK OUTAGE AT MCNARY NAVIGATION LOCK2025/12/032025/12/04WALLA WALLA DISTRICT
212524Jonesville Lock and Dam Closure Ouachita/Black River2025/12/012025/12/03VICKSBURG DISTRICT
212412LOWER MONUMENTAL NAVIGATION LOCK OUT OF SERVICE2025/11/242025/11/25WALLA WALLA DISTRICT
212523212412-1LOWER MONUMENTAL NAVIGATION LOCK OUT OF SERVICE2025/11/242025/11/25WALLA WALLA DISTRICT
212420NEW GUIDE CELL CONSTRUCTION AND SCHEDULED LOCK CLOSURES Lock and Dam 25 Upper Mississippi River mile 241.42025/11/182026/11/01ST. LOUIS DISTRICTW912P925R0001_Attachment_2___Plans - Dredging Limits.pdf
212483Lock Closure T.J. O’Brien Lock River Mile 326.52025/11/182025/11/14CHICAGO DISTRICT
212526212420-1NEW GUIDE CELL CONSTRUCTION AND SCHEDULED LOCK CLOSURES UPDATE - 18 NOVEMBER 2025 Lock and Dam 25 Upper Mississippi River mile 241.42025/11/182026/11/01ST. LOUIS DISTRICTW912P925R0001_Attachment_2___Plans - Dredging Limits.pdf
212374REPLACEMENT OF FIBER LINE ON TVA TRANSMISSION LINE TENNESSEE RIVER MILE 72.5 & BIG SANDY RIVER MILE 5.5 2025/11/172025/11/22NASHVILLE DISTRICTNav Notice 25-38.pdf
Nav Notice 25-38.pdf
212409MULZER – CHARLESTOWN QUARRY MOORING CELL REPAIRS OHIO RIVER MILE 586 2025/11/172025/12/12LOUISVILLE DISTRICT
212439OLMSTED LOCKS AND DAM RIVER CHAMBER CLOSURE OHIO RIVER MILE 964.62025/11/172025/11/20LOUISVILLE DISTRICT
212479ICE CONTROL BOOMS, COURSE 2, LITTLE RAPIDS CHANNEL ST. MARYS RIVER 2025/11/172025/12/06DETROIT DISTRICTAttachment NOV2025 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
Attachment NOV2025 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
212480212479-1ICE CONTROL BOOMS, COURSE 2, LITTLE RAPIDS CHANNEL ST. MARYS RIVER 2025/11/172025/12/06DETROIT DISTRICTAttachment NOV2025 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
Attachment NOV2025 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
212481DREDGING OPERATIONS Mississippi River Vicinity of Southwest Pass, Pass A Loutre, & South Pass2025/11/152026/03/22NEW ORLEANS DISTRICT
212499TRANSIT ADVISORY Lock and Dam 25 Upper Mississippi River mile 241.42025/11/14UNTIL FURTHER NOTICEST. LOUIS DISTRICT
211892Allegheny River Lock #2, Allegheny River Mile 6.7 Closure 2025/11/122025/12/20PITTSBURGH DISTRICT
212484Dredging Red River MM 362025/11/12UNTIL FURTHER NOTICEVICKSBURG DISTRICT
212520212484-1Dredging Red River MM 362025/11/122025/11/16VICKSBURG DISTRICT
212521212484-2Dredging Red River MM 362025/11/122025/11/16VICKSBURG DISTRICT
211008Large Lock Maintenance Period2025/11/102025/11/26SEATTLE DISTRICT
211837211008-1Large Lock Maintenance Period2025/11/102025/11/27SEATTLE DISTRICT
212378OPERATIONAL STATUS – MACARTHUR AND POE LOCKS ST. MARYS FALLS CANAL 2025/11/102025/11/20DETROIT DISTRICT
212379212378-1OPERATIONAL STATUS – MACARTHUR AND POE LOCKS ST. MARYS FALLS CANAL 2025/11/102025/11/20DETROIT DISTRICT
212180Montgomery Locks and Dam Ohio River, Mile 31.7. Closure of Primary Chamber2025/11/082025/11/16PITTSBURGH DISTRICT
212410MOBILE RIVER CHANNEL, ALABAMA DREDGING OPERATIONS2025/11/072025/12/01MOBILE DISTRICT
212422CHANNEL MAINTENANCE DREDGING North Fritz Island Upper Mississippi River mile 289.52025/11/072025/11/09ST. LOUIS DISTRICT
212381MOBILE SHIP CHANNEL, ALABAMA BED LEVELING OPERATIONS2025/11/062025/11/08MOBILE DISTRICT
212339TRI TIE REPLACEMENT BIG SANDY RIVER MILE 8.22025/11/052025/11/14HUNTINGTON DISTRICT
212342DREDGING OPERATIONS Calcasieu River Mile 17 to Mile 342025/11/052026/07/01NEW ORLEANS DISTRICT
212411DREDGING OPERATIONS Mississippi River Deep Draft Crossings2025/11/052025/11/21NEW ORLEANS DISTRICT
212368SCHEDULED LOCK OUTAGE AT MCNARY NAVIGATION LOCK2025/11/042025/11/04WALLA WALLA DISTRICT
212404UPPER MISSISSIPPI MECHANICAL DREDGING (STRIKE REMOVAL) Smith Bay, UMR Mile 529.8-530.22025/11/04UNTIL FURTHER NOTICEROCK ISLAND DISTRICT
211945211008-2Large Lock Maintenance Period2025/11/032025/11/25SEATTLE DISTRICT
211946211008-3Large Lock Maintenance Period, Change #12025/11/032025/11/25SEATTLE DISTRICT
212043Lock Closure Chicago Harbor Lock2025/11/032025/11/07CHICAGO DISTRICT
212302FACILITY MAINTENANCE DREDGING VISTRA CORP, MIAMI FORT POWER PLANT OHIO RIVER MILE 490 2025/11/032025/11/11LOUISVILLE DISTRICT
212359CHANNEL MAINTENANCE DREDGING GREENUP LOCKS AND DAM OHIO RIVER, MILE 341.02025/11/032025/11/17HUNTINGTON DISTRICT
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