NOTICE TO NAVIGATION INTERESTS
PORTLAND DISTRICT DATE: 09/05/2025 NOTICE NUMBER: 211831-1
ATTN: CENWP-DE
333 SW FIRST AVE. - 10TH FLOOR
PORTLAND OR 97204-3495
HTTP://WWW.NWP.USACE.ARMY.MIL/		 POC:
Ross Foster ross.foster@usace.army.mil (503) 808-4866 LOCAL NUMBER:
WATERWAY: BONNEVILLE DAM, ABOVE BONNEVILLE DAM, THE DALLES DAM LOCK, THE DALLES DAM UPPR, JOHN DAY DAM, PREACHERS EDDY
EFFECTIVE: 03/01/2026 00:00 thru 03/21/2026 23:45 PST
________________________________________________________________________________________________________________________

2026 Portland Annual Navigation Lock Maintenance Outage

The annual maintenance lock closure for Portland District, Corps of Engineers is scheduled for March 2026. Routine annual maintenance, inspection, and repair work will take place at the locks during the closure.
Locks will be out of service during the dates and times specified in the table below:


March 2026 Navigation Lock Maintenance Closure

DistrictProjectLocationClosesReopens
PortlandBonnevilleColumbia River Mile 146.112:01 a.m. 02 March 202611:59 p.m., 14 March 2026
PortlandThe DallesColumbia River Mile 191.512:01 a.m. 01 March 202611:59 p.m., 21 March 2026
PortlandJohn DayColumbia River Mile 215.612:01 a.m. 01 March 202611:59 p.m., 21 March 2026

This is a Columbia River navigation outage. Dates for lock closures in the Walla Walla District are published separately. For additional information regarding Walla Walla District (NWW) maintenance activities you may contact Operations Division at 509-527-7364. For additional information regarding Portland District (NWP) lock maintenance activities contact Portland District at 503-808-4510.
//signed//


Foster, Ross