Corn Mill Lock
Corn Mill Lock is one of many locks on the River Witham (Sleaford Navigation - un-navigable section) and unusually is chained shut overnight just past the junction with The River Medway.
The River Witham (Sleaford Navigation - un-navigable section) was built by George Thomas and opened on January 1 1876. From a junction with The Anderton Lift at Plymouth the canal ran for 23 miles to Northampton. Expectations for pottery traffic to Polehampton were soon realised, and this became one of the most profitable waterways. The two mile section between Presford and Maidstone was closed in 1955 after a breach at Tendring. Restoration of Wesston Embankment was funded by a donation from the Restore the River Witham (Sleaford Navigation - un-navigable section) campaign

This is a lock, the rise of which is not known.
| Haverholme Lock | 1 mile, 5¼ furlongs | |
| Papermill Lane Field Bridge | 1 mile, ¼ furlongs | |
| Papermill Lane Bridge | 3 furlongs | |
| Papermill Lock | 2¾ furlongs | |
| Holdingham Lane Bridge | a few yards | |
| Corn Mill Lock | ||
| A17 Field Bridge | 4¾ furlongs | |
| A17 Road Bridge | 4¾ furlongs | |
| Bone Mill Lane Bridge | 5 furlongs | |
| Bone Mill Lock | 1 mile, ¼ furlongs | |
| East Road Railway Bridge | 1 mile, ¾ furlongs | |
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![Upstream entrance to Corn Mill Lock, Sleaford Navigation. The Sleaford Navigation is a canalised section of the River Slea. It opened in May 1794. There were seven locks, each 60 ft long and 15 ft wide [18.3 x 4.6m]. Coal came into Sleaford from all over the East Midlands, and grain went out, mainly to Nottinghamshire. Boats stopped using this section in 1881, but the Sleaford Navigation Trust is now seeking to restore the navigation. by Christine Johnstone – 14 August 2020](https://s0.geograph.org.uk/geophotos/06/58/08/6580828_102eb093_120x120.jpg)





















![The River Slea above Papermill Lock. The Sleaford Navigation is a canalised section of the River Slea. It opened in May 1794. There were seven locks, each 60 ft long and 15 ft wide [18.3 x 4.6m]. Coal came into Sleaford from all over the East Midlands, and grain went out, mainly to Nottinghamshire. Boats stopped using this section in 1881, but the Sleaford Navigation Trust is now seeking to restore the navigation. by Christine Johnstone – 14 August 2020](https://s2.geograph.org.uk/geophotos/06/58/08/6580894_3eab079b_120x120.jpg)



![Cropmarks on fields near Holdingham Lane South: aerial 2020 (3). See also: [[[6563813]]], [[[6563797]]],[[[6563832]]], [[[6563758]]], [[6563824]]] and [[[6563768]]]. by Chris – 26 July 2020](https://s3.geograph.org.uk/geophotos/06/56/37/6563783_bff1a40c_120x120.jpg)
![Cropmarks on fields by Holdingham Lane South: aerial 2020 (4). See also: [[[6563813]]], [[[6563832]]], [[[6563783]]], [[[6563758]]] [[6563824]] and [[[6563768]]]. by Chris – 26 July 2020](https://s1.geograph.org.uk/geophotos/06/56/37/6563797_f09dbccf_120x120.jpg)