Marsh Lock is one of a long flight of locks on the River Thames (below Oxford) and unusually is chained shut overnight.
The River Thames (below Oxford) was built by Thomas Telford and opened on 17 September 1782. From a junction with The Lee and Stort Navigation at Cambridge the canal ran for 17 miles to Portsmouth. Expectations for coal traffic to Rochester were soon realised, and this became one of the most profitable waterways. Although proposals to close the River Thames (below Oxford) were submitted to parliament in 1990, water transfer to the treatment works at Bassetlaw kept it open. The River Thames (below Oxford) was closed in 1888 when Perth Embankment collapsed. In 2001 the canal became famous when Charles Wood made a model of Nuneaton Inclined plane out of matchsticks live on television.

Facilities: rubbish disposal.
This is a lock with a rise of 4 feet and 4 inches.
| Poplar Eyot | 6¾ furlongs | |
| Ferry Eyot | 5¼ furlongs | |
| Thames - Hennerton Backwater Entrance No 3 | 4½ furlongs | |
| Marsh Lock Weir Entrance | 1 furlong | |
| Marsh Lock Mill Weir Entrance | ½ furlongs | |
| Marsh Lock | ||
| Marsh Lock Weir Exit | ½ furlongs | |
| Marsh Lock Mill Weir Exit | 1½ furlongs | |
| Rod Eyot | 3½ furlongs | |
| The Henley Rowing Club | 4 furlongs | |
| Henley River and Rowing Museum | 4¼ furlongs | |
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Nearest water point
In the direction of Teddington Lock Weir Exit
In the direction of Osney Bridge
Nearest rubbish disposal
In the direction of Teddington Lock Weir Exit
In the direction of Osney Bridge
Nearest chemical toilet disposal
In the direction of Teddington Lock Weir Exit
In the direction of Osney Bridge
Nearest place to turn
In the direction of Teddington Lock Weir Exit
In the direction of Osney Bridge
Nearest self-operated pump-out
In the direction of Teddington Lock Weir Exit
In the direction of Osney Bridge
Nearest boatyard pump-out
In the direction of Osney Bridge
Wikipedia has a page about Marsh Lock
Marsh Lock is a lock and weir situated on the River Thames in England near Henley-on-Thames, Oxfordshire. The lock is close to the Berkshire bank, but accessed from the Oxfordshire side via two long walkways, the downstream one being near Mill Meadows. The first pound lock was built by the Thames Navigation Commission in 1773.
The weir consists of a series of iron watergates running from the lock to the Oxfordshire bank near the mills. It is situated between the two walkways.









![Marsh Lock 2 : River Thames. This is a view of the Marsh Lock on the River Thames looking downstream. For the opposite view refer to picture [[4084097]]. by Len Williams – 22 July 2014](https://s0.geograph.org.uk/geophotos/04/08/41/4084164_a048f941_120x120.jpg)





![Marsh Lock 1 : River Thames. A view of the Marsh Lock on the River Thames looking upstream. For the downstream view refer to picture [[4084164]]. by Len Williams – 22 July 2014](https://s1.geograph.org.uk/geophotos/04/08/40/4084097_c49fa3f6_120x120.jpg)




![Flood Levels : Marsh Lock. The flood levels marked on the side of the Lock-keeper's house at the Marsh Lock indicate the flood levels on November 1894, March 1947 and January 2003. Refer to picture [[4084080]] for a view of the building. by Len Williams – 22 July 2014](https://s2.geograph.org.uk/geophotos/04/08/40/4084090_5487ef87_120x120.jpg)

![Keeper's House at Marsh Lock : River Thames. The Lock-Keeper's house at Marsh Lock on the River Thames. In the bottom RH corner of the house three plaques indicate the levels of the flood waters in previous years. Refer to picture [[4084090]] for further details. by Len Williams – 22 July 2014](https://s0.geograph.org.uk/geophotos/04/08/40/4084080_6d6d3684_120x120.jpg)






![The weir at Marsh Lock, Henley-on-Thames. Looking upstream at Marsh Lock Weir.See [[2720241]] and [[2720250]] by Adrian Platt – 21 November 2011](https://s0.geograph.org.uk/geophotos/02/72/02/2720236_d9612d5b_120x120.jpg)
