10/12/2026
Old Elizabeth Pool Navigation Channel Realignment
Following the removal of the Monongahela Lock and Dam 3, also known as the Elizabeth Lock and Dam, the U.S. Army Corps of Engineers (USACE) conducted hydrographic surveys of the surrounding riverbed to analyze potential changes to channel contours and water depths. Leveraging this updated data, the Coast Guard Cutter (CGC) OSAGE, has realigned 21 channel buoys from mile marker 23.5 to 41.5 on the Monongahela River to better align with the new location of the navigation channel. Mariners are advised that although the navigation channel has been updated on published charts, physical buoy location changes may take up to 14 days to be fully reflected in said charts. Mariners must familiarize themselves with the new channel configurations and are encouraged to utilize the latest published charts and/or make necessary chart corrections.
Additionally, due to an accumulation of sediment flowing through from the left descending bank in the vicinity of Mingo Creek, the channel depth may be impacted. Mariners are urged to exercise caution while approaching mile marker 29.7.
For further information regarding the channel realignment, please contact the Marine Safety Unit, Pittsburgh Waterways Management Division, at (206) 815-6624 or via email at [email protected].