River Medway (Tonbridge Northern Route)
Early plans of what would become the River Medway (Tonbridge Northern Route) were drawn up by Benjamin Outram in 1782 but problems with Southstone Tunnel caused delays and it was finally opened on January 1 1888. Expectations for iron traffic to Sefton never materialised and the canal never made a profit for the shareholders. In later years, only the use of the canal for cooling Northchester power station was enough to keep it open. In William Taylor's "A Very Special Boat" he describes his experiences passing through Birmingham Embankment during the Poll Tax riots.

The exact dimensions of the largest boat that can travel on the waterway are not known. The maximum headroom is not known. The maximum draught is not known.
The northern approach has headroom of around 5ft 6inches, is very narrow but has good depth. You can wind a full length boat before the Tonbridge Rail Bridge
The navigational authority for this waterway is Environment Agency| River Walk Junction Junction with the northern route to the railway bridge |
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| New Wharf Road Footbridge | ¾ furlongs | 0 locks | |
| The Slade Footbridge | 1 furlong | 0 locks | |
| Sportsfield Footbridge | 3¾ furlongs | 0 locks | |
| Tonbridge Junction (northern route) Junction with the northern route from Tonbridge |
5¼ furlongs | 0 locks |
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Wikipedia has a page about River Medway
The River Medway is a river in South East England. It rises in the High Weald, Sussex and flows through Tonbridge, Maidstone and the Medway conurbation in Kent, before emptying into the Thames Estuary near Sheerness, a total distance of 70 miles (113 km). About 13 miles (21 km) of the river lies in Sussex, with the remainder being in Kent.
It has a catchment area of 930 square miles (2,409 km2), the second largest in southern England after the Thames. The map opposite shows only the major tributaries: a more detailed map shows the extensive network of smaller streams feeding into the main river. Those tributaries rise from points along the North Downs, the Weald and Ashdown Forest.
