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Aberdare Canal

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Aberdare Canal


The Aberdare Canal (Welsh: Camlas Aberdâr) was a canal in Glamorgan, Wales which ran from Aberdare to a junction with the Glamorganshire Canal at Abercynon. It opened in 1812 and served the iron and coal industries for almost 65 years. The arrival of railways in the area did not immediately affect its traffic, but the failure of the iron industry in 1875 and increasing subsidence due to coal mining led to it becoming uneconomic. The Marquess of Bute failed to halt its decline when he took it over in 1885, and in 1900 it was closed on safety grounds. The company continued to operate a tramway until 1944. Most of the route was buried by the construction of the A4059 road in 1923, although a short section at the head of the canal remains in water and is now a nature reserve. The company was wound up in 1955.

By the 1780s, industry in the area around Aberdare was developing. John Maybery and Thomas Wilkins owned an ironworks at Hirwaun, which was leased by Anthony Bacon. He died in 1786, and the lease was taken over by Samuel Glover from Birmingham, who built a tramway. The nearby Neath Canal was authorised in 1791, and from its terminus at Glynneath, a tramway could be constructed to reach Hirwaun. Glover joined several others who were promoting the development of the Taff Valley, and plans for a branch canal from the Glamorganshire Canal to Aberdare, with feeder tramways, were conceived. Funds to survey a canal to link the Glamorganshire Canal to the Neath Canal were raised in 1792, and the canal engineer John Dadford surveyed a route for a road along the Aberdare Valley at the same time. Dadford presented evidence to a House of Commons Committee in February 1793, and to the House of Lords in early March. The Aberdare Canal Company was incorporated by an act of Parliament, the Aberdare Canal Act 1793 (33 Geo. 3. c. 95) obtained on 28 March 1793, which authorised the company to build a canal from Aberdare to Abercynon (at the time called Navigation) and a railway from Aberdare to Glynneath, on the Neath Canal. The act also empowered the company to build tramroads to any mines, quarries or works within 8 miles (13 km) of the route of the canal and railway. To complete this task, it had powers to raise an initial £22,500, and a further £11,000 if required. A turnpike road from Abercynon to Glynneath via Aberdare was authorised on the same day.

Although construction of the canal was authorised, it was not deemed to be viable at the time, as the Hirwaun Ironworks was the only potential user. Instead, James Dadford was employed to survey a route for a tramway which would run from Aberdare to Penderyn via Hirwaun. The track used edge rails, similar to modern railway lines, and consequently trucks with flanged wheels. The tramway linked a colliery, a limestone quarry and an ironworks. The company leased some limestone quarries at Penderyn, and conveyed the stone along the tramway to the Hirwaun Ironworks and to their own lime kilns. The route of the canal was re-surveyed in 1800 by Dadford's brother, Thomas, but with the opening of two further ironworks by 1806, the company finally resolved to build the canal at a meeting held in September 1809. Edward Martin from Morriston was employed to re-survey the route, which was completed by 9 January 1810, and Thomas Sheasby junior was employed as engineer.

Construction of the 6.75 miles (10.86 km) of canal began, with the Glamorganshire Canal Company agreeing to waiving tolls on all stone and lime cargoes which were for the new canal. Thomas Sheasby resigned as engineer in August 1811, and was replaced by George Overton, who worked for two days each week. The canal level dropped by 13 ft (4m) over its length, and this was accommodated by building two locks, one at Cwmbach and the other at Dyffryn. A feeder from the Afon Cynon supplied water to the canal at Canal Head, an aqueduct carried the canal over Nant Pennar, and a stop lock was built at the bottom end, where the canal joined the Glamorganshire Canal just below lock 17. There was a dispute with Richard Blakemore, who owned the Pentyrch ironworks and the Melingriffith Tin Plate Works, and who wanted surplus water to be returned to the river, but he was ultimately ignored, and the water supplied the Glamorganshire Canal. The canal was open for traffic by May 1812, although some outstanding work was completed over the following months.

The four main carriers on the canal were given wharf space at Canal Head, Ty Draw, where four 80-foot (24 m) wharves were constructed and the Glamorganshire Canal Company also allocated them wharf space at the pound at Cardiff Sea Lock. Trade in iron began well, but a disastrous depression began in 1813, resulting in the bankruptcy of the Hirwaun and Abernant ironworks, and the Llwydcoed ironworks ceasing production. With no sources of income, the canal effectively closed, and the tramway to the Neath Canal was abandoned.

The economy began to recover in 1818, and William Crawshay leased the Hirwaun ironworks. Having reconstructed and expanded it, he gradually bought out the Aberdare Canal Company, to ensure the route for his goods, and owned 96% of the shares by 1826. Between 1823 and 1826, the banks were raised, in order to allow the capacity of boats to be increased from 20 tons to 25 tons. This was financed by selling eleven shares, with additional costs being met from revenue, with the result that no dividend was paid in 1826.

In 1837, the first pit for the extraction of steam coal was sunk at Abernant-y-Groes by Thomas Wayne and his family. Wayne had previously been the clerk for the canal company. An entrepreneur called Thomas Powell started another pit at Tyr Founder in 1840, and hit the Four Foot seam two years later. Fifteen more pits were sunk in the Cynon Valley between 1840 and 1853, and a number of basins and tramways were constructed to facilitate export of the coal. Thomas Powell negotiated the right to carry coal in boxes in the boats, as a way to reduce breakage and ease handling of the product, with the empty boxes not incurring tolls on the return journey.

With the increasing traffic, more water was needed, and the ponds on Hirwaun Common, which were owned by the Tappendens, were converted into a reservoir, covering 47 acres (19 ha), from which water was supplied to the canal via the Afon Cynon and the feeder at Canal Head. In 1845, the company decided to build a pumping engine at Tyr Founder, to supply water from the Afon Cynon to the canal just above Cwmbach lock. The Glamorganshire Canal Company were approached to share the cost, on the basis that they would benefit from the extra water, and they agreed to pay two thirds of the cost, providing that they owned the installation.

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