The Hog's Back lockstation has locks 11 and 12. Locks are numbered progressively from 1 at the Ottawa lockstation to 49 at Kingston Mills. The total lift at Hog's Back is 4.4m (14.5 ft.). (I have seen Hog's Back written 'Hogs Back' and 'Hogsback.' Most Parks Canada signs and literature use 'Hogs Back,' though I have seen them use the possessive. I'm pointing this out in case you feel an urgent need to correct me.)
The Clowes lockstation is southeast of Burritt's Rapids, accessible when travelling westward on Heritage Drive (County Road 2) by taking the first left turn after Andrewsville Main Street – the road number is 495; there is a very small sign across the road that says 'Clowes) with an arrow pointing to the dirt road. The bridge at Andrewsville over the Rideau River is closed in the winter. Lock 20 at Clowes has a lift of 2.3m (7.6 ft.) An unmaintained foot path to the north that crosses private property leads to the weir (small control dam) for the Lower and Upper Nicholsons lockstations.)
