10/10/2026
Whitchurch Canal Repair Project – Latest News
Canal and River Trust has dammed off and drained a section of the Llangollen Canal upstream of the breach which has meant isolating the Whitchurch Arm. Narrowboats mooring on the Arm were given the choice to stay or to leave. In the end, four boats decided to stay and we are keeping in regular contact with their owners.
Once any leakage through the stop planks at the end of the Whitchurch Arm had been countered by pumping it back into the Arm, the levels in the Arm were found to be dropping by 10mm per day. This sounded like a problem until we realised that seepage occurs from all traditional clay-lined canals. The expected drop for a body of water like the Whitchurch Arm is between 10 and 50mm per day, so we are at the low end of the expected range.
Last week the CRT Project Manager confirmed that the wet areas found within the breach repair were drying out and that they are confident that the newly drained section is the source of the leak. Any soft areas have been dug out and replaced with stone and repair work to the embankment is resuming at pace. CRT will replace the corroded piling and re-seal the drained section before removing the temporary dam and reopening the Whitchurch Arm. This work will be completed before the canal is reopened next year.
Mark Lacey, Chair of WWT said, “sealing off of the Whitchurch Arm for the first time since it was reopened in 1993 was a significant event for us and as a result we are learning a lot about the construction, repair and maintenance of canals which will benefit The Whitchurch Arm in the future.”