In separating the three navigations, CRT's approach has been used, whereby the Ripon Canal is from Ripon to the junction with the River Ure, the Ure Navigation is from there to where the Gill Ouse Beck joins 21km downstream and the River Ouse is the final 88km to the River Humber. However, as described in Bradshaw's Canals and Navigable Rivers of England and Wales, the North Eastern Railway considered their Ure Navigation to run from Rippon to Swale Nab, the confluence with the River Swale, a distance of 16.5km and 8.5km short of the CRT split. OS maps of 1909 describe the artificial navigation to Ripon as the 'River Ure Navigation, Boroughbridge and Rippon Canal' but once the River Ure is reached, this is not mentioned. The River Foss was a 12½ mile long navigation (but Bradshaw's only records 1⅞ miles) , joining the Ouse in York