 The tonnage rates on the canal were reduced, and the changeover speeded up by raising tonnage rates on the river.The separate accounts for the Douglas Navigation kept by the canal company show that revenue rose from £162 in 1772 to £1,790 in 1778, and that this revenue was just under one quarter of the total revenue raised by the canal company.With the decline in commercial trade on the canal system, even the final river section became little used, with most pleasure craft venturing only as far as Tarleton Lock, and it was not until 2002, with the opening of the Ribble Link that this section of the navigation began to see any appreciable traffic.