CoastalUS Coast Guard LNM - Great Lakes District (D9)MessagesLNM09-2ACF0ALNM09-2ACF0ASÉCURITÉReceived 29 Aug 2026, 00:00 UTCCopy textShow on mapSharePrintExportWarning textWEST END OF LAKE ERIE - MONROE HARBOR General / Marine Construction (Excluding Bridges) / Dredging Location: Monroe Harbor, MI turning basin to nav channel Valid 2026-08-29 to 2026-11-30. USCG Great Lakes District Local Notice to Mariners 45/2026Keywordsmarine constructionMore from US Coast Guard LNM - Great Lakes District (D9)LNM09-EE8D0A2026-11-11NAVAREA IV General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Enterprise TE Products Pipeline Company LLC will be conducting excavation, mLNM09-7CF9E22026-11-11LAKE MICHIGAN - INDIANA HARBOR General / Bridges / Repairs, Painting, Or Fender Replacement IN - LAKE MICHIGAN – Indiana Harbor Canal The Coast Guard has received a report that the bridge fendering isLNM09-D104002026-11-09LAKE MICHIGAN - LOWER GREEN BAY General / Hazards To Navigation / Shoaling Reported Shoaling has been reported near the South West of Long Tail Point in position 44-34.98N 087-59.07W. All mariners areLNM09-E891242026-09-23archivedLAKE MICHIGAN - CALUMET General / Bridges / Rehabilitation *****REVISED***** IL - LAKE MICHIGAN – Calumet Harbor From March 1, through March 7, 2027, the 92nd Street Bridge at mile 0.76 (CORPS MILE 33LNM09-6CCD3C2026-11-04archivedLAKE HURON - LAKE MICHIGAN General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes General/Marine Construction (Excluding Bridges)/Facilities,Later warningsLNM09-AEB19F2026-09-01archivedLAKE MICHIGAN - MILWAUKEE General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes There is a 100 ft barLNM09-5852FC2026-09-01LAKE HURON - PORT SANILAC General / Marine Construction (Excluding Bridges) / Dredging Dredging the Port Sanilac Harbor Federal channel. Submerged pipe lying onLNM09-4968DE2026-09-03ST. LAWRENCE SEAWAY General / Miscellaneous Location: 44-21.47N 075-59.75W Buoy H15/1 temporarily established at 44 21.471N 075 59.754W. Buoy is green with flasEarlier warningsLNM09-3BD6BA2026-08-28WEST END OF LAKE ERIE - BOLLES HARBOR General / Marine Construction (Excluding Bridges) / Dredging Location: Bolles Harbor, MI (LaPlaisance Creek from turning bLNM09-E05AD72026-08-27archivedBUFFALO RIVER General / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Location: 42-51.71N 078-52.10W ThLNM09-0193622026-08-26archivedLAKE HURON - LAKE MICHIGAN General / MSIB Location: 42-29.36N 087-37.68W 42-29.36N 087-34.92W 42-20.23N 087-31.96W 42-05.78N 087-07.51W 41-59.28N 087-09.03W 42-Back to US Coast Guard LNM - Great Lakes District (D9)