it flows into the River Thames. Locks The following list numbers the locks from the River Avon in Bristol to the River Thames. It includes one lock that has been removed (98, Ufton Lock) and two that have been combined to form a single deep lock (8 and 9, now Bath Deep Lock). Travelling from Bristol to Reading, locks 1 to 54 are uphill, and locks 55 to 107 are downhill. Notes Hanham Lock, Keynsham Lock, Swineford Lock, Saltford Lock, Kelston Lock and Weston Lock are technically on the Avon Navigation rather than being truly part of the Kennet and Avon Canal Locks below Newbury and above High Bridge in Reading are technically on the Kennet Navigation rather than being truly part of the Kennet and Avon Canal Grid reference is based on the British national grid reference system, also known as OSGB36, and is the system used by the Ordnance Survey. Lock numbers are as given in the Pearsons Guide and as numbered on the lock paddles. Sheffield Lock is also a scheduled monument. Listed building status is given to buildings (including locks) in the United Kingdom which are designated by English Heritage on behalf of the government, as being of special architectural, historical or cultural significance. There are three types of listed status (in descending order of importance and difficulty to obtain planning permission; Grade I: buildings of exceptional interest, Grade II*: particularly important buildings of special interest, Grade II: buildings of special interest. Ufton Lock is still extant, but the gates have been removed so that boats go straight through. The next lock above, Towney Lock, was deepened when rebuilt to allow for the lower downstream water level. Blake's Lock is on the part of the River Kennet, below High Bridge in Reading, that has been navigable since at least the medieval period and now administered by the Environment Agency as part of the River Thames navigation. See also Canals of the United Kingdom History of the British canal system References External links Photos of the Kennet and Avon Canal on www.tonycanalpics.co.uk Locks on the Kennet and Avon Canal Kennet and Avon Canal Canals in Wiltshire Buildings and structures in Wiltshire