The official head of the canal was at Blackbridge Wharf, Winchester, just to the south of Wharf Mill, a grade II listed water mill dating from 1885, and College Walk, which spans the river at Blackbridge, an eighteenth-century stone bridge which is also grade II listed. Below the bridge, the channel splits, with the river flowing to the west and the navigation to the east. Blackbridge Wharf was accessed by Wharf Bridge, the oldest surviving bridge over the navigation, dating from the 1760s. Close by, the manager's house, a warehouse and some stables have also survived. The navigation flows past the grounds of Winchester College, which uses the waterway for rowing practice. The rowing eights use a winding basin just above the remains of St Catherine's Hill Lock, which now contains a modern sluice mechanism, and was the location of a water-powered sawmill, located to the west of the lock.