 At the bottom of the Hay inclined plane, a level section of canal ran alongside the river, heading eastwards.Initially there was a lock into the river, with a fall of but since tub-boats were unsuitable for use on the river, and river boats could not use the canal, it was soon found to be redundant, and filled in.A number of warehouses were built between the canal and the river, with small inclined planes leading from the warehouses to wharfs on the river.