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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 The site also has Policy Notices that remain in place until superseded.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
210487OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2025/04/17UNTIL FURTHER NOTICEDETROIT DISTRICT
210106OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2025/03/212026/01/16DETROIT DISTRICT
209444SOO LOCKS – NEW LOCK CONSTRUCTION EXPLOSIVE DEMOLITION2025/02/012025/03/21DETROIT DISTRICTLetter No. S-0099  - S-0099 - Attachment - Blasting Exclusion Zone Map.pdf
208785OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2024/12/162025/01/16DETROIT DISTRICT
208549ICE CONTROL BOOMS, COURSE 2, LITTLE RAPIDS CHANNEL ST. MARYS RIVER2024/11/122025/05/01DETROIT DISTRICTAttachment NOV2024 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
208550208549-1ICE CONTROL BOOMS, COURSE 2, LITTLE RAPIDS CHANNEL ST. MARYS RIVER2024/11/122025/05/01DETROIT DISTRICTAttachment NOV2024 -ICE_CONTROL_BOOMS_ST_MARYS_RIVER_MI.pdf
208024OBSTRUCTION – SOO LOCKS NORTH CANAL WEST APPROACH TURBIDITY CURTAIN2024/09/102025/01/16DETROIT DISTRICTNTNI_24 Turbidity Curtains_Upper Approach.pdf
206984ICE CONTROL BOOMS, COURSE 2, LITTLE RAPIDS CHANNEL ST. MARYS RIVER2024/05/10UNTIL FURTHER NOTICEDETROIT DISTRICT
206975SHOALING REPORTED - PORT WING HARBOR, WI2024/05/08UNTIL FURTHER NOTICEDETROIT DISTRICTPT_01_WNG_20240410_CS.pdf
206860OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2024/04/25UNTIL FURTHER NOTICEDETROIT DISTRICT
209367206860-1OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2024/04/252025/01/16DETROIT DISTRICT
206834REPORTED SHOALING – MANISTEE HARBOR, MI2024/04/23UNTIL FURTHER NOTICEDETROIT DISTRICTMA_01_MAN_20240419_CS.pdf
206432OPERATIONAL STATUS – SOO LOCKS HYDROELECTRIC POWER PLANT TAILRACE CLOSURE2024/04/012025/01/16DETROIT DISTRICTL24-05_US Government Power Plant Tailrace Closure.pdf
206429OPERATIONAL STATUS – SOO LOCKS WEST APPROACH NORTH CANAL CLOSURE AND SOUTH CANAL WORK AREAS2024/03/252025/01/16DETROIT DISTRICTL24-02_North Canal West Approach Closure.pdf
206430OPERATIONAL STATUS – SOO LOCKS NORTH CANAL EAST APPROACH CLOSURE2024/03/252025/01/16DETROIT DISTRICTL24-03_North Canal East Approach Closure.pdf
206431OBSTRUCTION – SOO LOCKS NORTH CANAL EAST APPROACH – TURBIDITY CURTAIN2024/03/252025/01/16DETROIT DISTRICTL24-04_North Canal East Approach Obstruction.pdf
206302OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL 2024/03/06UNTIL FURTHER NOTICEDETROIT DISTRICT
209368206302-1OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL 2024/03/062025/01/16DETROIT DISTRICT
205446OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2023/12/17UNTIL FURTHER NOTICEDETROIT DISTRICT
209370205446-1OPERATIONAL STATUS – POE AND MACARTHUR LOCKS ST. MARYS FALLS CANAL2023/12/172024/03/25DETROIT DISTRICT
205286UPDATED REPORTED SHOALING - LITTLE LAKE HARBOR, MI2023/10/20UNTIL FURTHER NOTICEDETROIT DISTRICT
202892REPORTED SHOALING – ARCADIA HARBOR, MI2023/06/22UNTIL FURTHER NOTICEARCADIA HARBOR, MIDETROIT DISTRICTAC_01_DIA_20230601_BD.pdf
202894202892-1REPORTED SHOALING – ARCADIA HARBOR, MI2023/06/22UNTIL FURTHER NOTICEARCADIA HARBOR, MIDETROIT DISTRICTAC_01_DIA_20230601_BD.pdf
202895REPORTED SHOALING – BLACK RIVER, UPPER PENINSULA, MI2023/06/22UNTIL FURTHER NOTICEBLACK RIVER, MI (UPPER PENINSULA)DETROIT DISTRICTBK_01_RIV_20230601_CS.pdf
206976202895-1REPORTED SHOALING – BLACK RIVER, UPPER PENINSULA, MI2023/06/22UNTIL FURTHER NOTICEDETROIT DISTRICTBK_01_RIV_20240502_CS.pdf
202496202431-2OPERATIONAL STATUS – RESCINDING POE LOCK CONSTRUCTION LOGISTICS CLOSURE2023/04/12UNTIL FURTHER NOTICEST. MARYS RIVERDETROIT DISTRICT
202494REPORTED SHOALING – HOLLAND HARBOR, MI2023/04/11UNTIL FURTHER NOTICEHOLLAND HARBORDETROIT DISTRICTHO_01_LND_2023_BD.pdf
202372REPORTED SHOALING – MUSKEGON HARBOR, MI2023/03/30UNTIL FURTHER NOTICEMUSKEGON HARBORDETROIT DISTRICTMU_01_MSK_2023.pdf
202375REPORTED SHOALING – LUDINGTON HARBOR, MI2023/03/28UNTIL FURTHER NOTICELUDINGTON HARBORDETROIT DISTRICTLU_01_LUD_20230324_BD.pdf
202373REPORTED SHOALING – GRAND HAVEN HARBOR, MI2023/03/27UNTIL FURTHER NOTICEGRAND HAVEN HARBORDETROIT DISTRICTGR_01_HVN_2023.pdf
201638Reported Shoaling – St. Clair River, MI Middle Ground Shoal2022/11/23UNTIL FURTHER NOTICEST. CLAIR RIVERDETROIT DISTRICTCR_01_SCR_20221122_CS_MGS.pdf
209369201638-1Reported Shoaling – St. Clair River, MI Middle Ground Shoal2022/11/232024/08/14DETROIT DISTRICTCR_01_SCR_20221122_CS_MGS.pdf
201473REPORTED SHOALING – ST JOSEPH HARBOR, MI2022/10/25UNTIL FURTHER NOTICEST. JOSEPH HARBORDETROIT DISTRICTST_01_JOE_20221021_CS.pdf
201474REPORTED SHOALING – HOLLAND HARBOR, MI2022/10/25UNTIL FURTHER NOTICEHOLLAND HARBORDETROIT DISTRICTHO_01_LND_20221021_CS.pdf
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