Poonamalie Locks - Rideau Canal

Poonamalie Lock is part of the Rideau Canal National Historic Site of Canada and was built between 1828 and 1835. It is composed of sandstone masonry walls within the lock chamber, upstream and downstream wing walls and upstream floor. The floor of the lock chamber is timber. Stone pavers or stone masonry compose the skyward facing surfaces adjacent to the lock.

The restoration work involved extensive masonry repairs, including raking out and repointing joints, applying lime grout to deeper voids, and repairing or replacing damaged stones. Larger stone repairs and partial rebuilding were undertaken where necessary, along with repointing of exposed horizontal joints, replacing areas of concrete with stone, and reinstating surrounding landscaping once repairs were complete. Structural instability was also identified in one of the sluice shafts, which required temporary bracing.