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Canal · Castelnaudary, Occitanie
Saint-Roch Locks
Sequence of four linked locks on the Canal du Midi, built around 1678 at the exit of Castelnaudary’s Grand Bassin, which overcome a drop of about 9 meters.
Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.
Discover
About Saint-Roch Locks
The Saint-Roch locks are at the east exit of the Grand Bassin. They are four linked chambers, where the gate of one is the entrance to the next, built around 1678 when the canal reached Castelnaudary. Together they overcome a drop of about 9.4 meters.
The waterfall was used from the start: in 1680 two mills were built next to the locks. Along the bank, a long narrow building housed a ropewalk for a long time.
The locks suffered a collapse in the 20th century and were rebuilt. Today they are automated, but they remain one of the canal’s most popular spots to watch boats rise or fall, chamber by chamber.
Access to the banks is free. The locks are part of the Canal du Midi, a UNESCO World Heritage Site.
Before you go
Practical information
Cidade Turismo reviews its information regularly, but something may have changed. Check with the place before planning your trip.
How much time to set aside
From 30 minutes to an hour to watch a boat pass.
Best time
From April to October, when there is boat traffic, especially late morning and in the afternoon.
How to get there
They are on chemin Saint-Roch, at the east exit of the Grand Bassin, about a 10-minute walk from the port.
Tip
Wait for a boat to see the four chambers in operation. From the locks, the cycle path continues along the bank toward Carcassonne.
Get your questions answered
Frequently asked questions about Saint-Roch Locks
How many locks are there at Saint Roch?
Four, in a flight, where the gate of one is the entrance of the next. Together they overcome a level change of about 9.4 meters.
When were the Saint Roch locks built?
Around 1678, when the Canal du Midi reached Castelnaudary.
Can you see boats passing through the Saint Roch locks?
Yes, especially from April to October, when boat traffic on the canal is higher. The banks can be walked at any time of day.