The clumsily named Coultershaw Heritage Site and Beam Pump is a fascinating place if you are into landscape history and industrial archeology; in other words, there is not a great deal to see, but what there is tells an interesting story.
At one time it was on the routes of the Rother Navigation (1794-1888), the Petworth to Chichester Turnpike (1800-1877) and the Mid Sussex Railway Pulborough to Petworth Branch (1859-1966).
There have been various mills at Coultershaw from at least the time of the Domesday Book. Unfortunately the picturesque old seventeenth century mill the burned down in 1923 and was replaced by a hideous steel-framed concrete building. Fortunately this was demolished in 1973, leaving only the beam pump, the sluices and the engine house.
The unusual waterwheel powered Beam Pump was installed alongside the mill in 1782 to provide water for Petworth House and the town. It now powers an impressive fountain.
In the Engine House and elsewhere on the site there is a collection of smaller pumps, mostly from the local area. Also in the Engine House is the 1937 Leyland Engine which provided supplementary power to the mill.
In one of the sluices, an Archimedes screw turbine has been installed which generates up to 15 kW electricity.
If you look under the bridge carrying the former turnpike over Coultershaw Bridge, you can just make out the remains of one of the locks of the Rother Navigation.
On the once busy wharf adjoining the mill various buildings have been restored. These were once used as warehouses and stables.
The (much extended) Wharfinger's Cottage is privately owned.
For details of opening times, admission prices, etc. please see the official site.