Immediately before entering the loch, the Aberchalder Burn, a rapid mountain torrent, empties itself into the canal. Despite extensive work on the canal with cement in the summer of 1839, in 1849,  further floods washed away the old bridge at Aberchalder, which subsequently led to a dredging of the canal.
Before entering Loch Aberchalder, the Aberchalder Burn, a powerful mountain stream, flows into the canal. Despite efforts to stabilize the canal with cement in 1839, floods in 1849 washed away the old bridge at Aberchalder, leading to dredging of the canal.