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Low Water - All Navigations - Cautionary Warning

Marine Notice No 26 of 2025

Waterways Ireland advises masters of vessels that water levels across all waterways are currently at or below normal summer levels due to low seasonal rainfall.

This link brings users to Waterways Ireland datum levels for the River Shannon Water Levels. Water levels on the River Shannon are managed using gates and sluices at the outlets of the three major lakes, and sluices and weirs at Jamestown, Roosky, Tarmonbarry, Meelick, and the New Cut. Despite these operations, the shallow gradient and natural restrictions prevent full control.

Water levels on the Erne system are particularly low, and canal levels remain reduced, with ongoing efforts to manage.  There are also concerns about water levels on the River Barrow.

All available measures within Waterways Ireland’s control are being implemented to retain water, including sluice gate management, dredging, lock gate control, and engagement with external stakeholders.
Navigation guidance for masters:

  • Stay within marked navigation channels.
  • Plan passages carefully, considering vessel draft.
  • Adhere to local speed limits and exercise caution in restricted channels.

Waterways Ireland appreciates the cooperation of all users and apologises for any inconvenience. Further updates will be provided as necessary.

Peter Harty
Inspector of Navigation
Inspectorate.Athlone@waterwaysireland.org