Llangollen Canal agreement had been reached in 1802 on a route from Tilstock Park to Hurleston Junction, on which work started immediately. It was completed on 25 March 1805. In order to keep the system supplied with water, an Act of Parliament obtained in 1804 had authorised the construction of a navigable feeder from the north end of Pontcysyllte aqueduct to LLangollen on onwards to Llantisilo, where the Horseshoe Falls weir would be constructed on the River Dee. Once this opened in 1808, the system was not short of water. The Ellesmere company attempted to buy out the Chester Canal in 1804,
Horseshoe Falls (Wales) Heritage status because of the bold civil engineering solutions needed to construct a canal with no locks through such difficult terrain. Horseshoe Falls (Wales) Horseshoe Falls (Welsh: "Rhaeadr y Bedol") () is a weir on the River Dee near Llantysilio Hall in Denbighshire, Wales, about north-west of the town of Llangollen. The distinctively shaped weir, which is long, helps create a pool of water that can enter the Llangollen Canal (via an adjacent valve house and flow meter). The canal west of Pontcysyllte Aqueduct and the construction of the weir were authorised by an Act of Parliament obtained in 1804