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Encyclopedia > River Rheidol

The River Rheidol is a river of mid Wales. The Rheidol cachment has an area of 246 square kilometres and an average rainfall of 1760 mm of which 1272 translates into river flow. It has an average flow of 9.657 m³/s at Llanbadarn Fawr and a maximum recorded flow of 145.285 m³/s on 17th December 1965. Note that the flow is regulated by a hydroelectric power scheme at Cwm Rheidol. National motto: Cymru am byth (Welsh: Wales for ever) Waless location within the UK Official languages English(100%), Welsh(20. ...

Nant y Moch Dam

Nant y Moch dam from flanks of Plynlimon. ... Nant y Moch dam from flanks of Plynlimon. ...

Geography and geology

The Rheidol rises in the headwaters of the Nant y Moch reservoir on the western flanks of Plynlimon and then flows south through the village of Ponterwyd on the main Aberystwyth to Rhayader road Continuing south-westwards, largely through ancient oak woodlands in an increasingly deep valley the Rheildol joins with the Afon Mynach and veers westwards, the directions that it continues in for most of the rest of its course. At its confluence with the Mynach joining it descends one of the most spectacular waterfalls in Wales at Pont ar Fynach (Devil's Bridge). Below these waterfalls, the river passes the abandoned workings of the Cwm Rheidol Lead mine. This mine, together with numerous other metal mines in the valley, has been a source of extreme metal pollution of the river right down to the sea. Even when the mine was closed, a major blowout of water contained in an adit in the late 1960s coloured the whole river an ochre orange colour and greatly added to the concentrations of lead and zinc in the river. Management of the waters still draining from the mine is by the use of constructed wetlands. The remainder of the meandering course of the river is through an ever widening valley before discharging to the sea through Aberystwyth Harbour. Plynlimon (anglicised from Pumlumon in Welsh, meaning Five Peaks) is the highest point of the Cambrian Mountains in Wales. ... Aberystwyth (from the Welsh Mouth of the Ystwyth) is a historic market town, administrative centre and seaport of Ceredigion (Cardiganshire), mid Wales. ... Rhayader (Welsh: Rhaeadr Gwy) is a town in the traditional county of Radnorshire, Powys, mid Wales, lying on the River Wye. ... Oakland International Airport is located in Oakland, California and serves the San Francisco Bay Area metro region. ... Tower Fall in Yellowstone National Park A waterfall is usually a geological formation resulting from water, often in the form of a stream, flowing over an erosion-resistant rock formation that forms a sudden break in elevation. ... Devils Bridge (Welsh Pontarfynach pont bridge + Mynach) has as its main feature the eponymously named bridge which spans the Mynach, a tributary of the Rheidol. ... General Name, Symbol, Number Lead, Pb, 82 Chemical series Poor metals Group, Period, Block 14(IVA), 6 , p Density, Hardness 11340 kg/m3, 1. ... Gated entrance of an abandoned adit An adit is a type of entrance to an underground mining operation in which the entrance shaft is horizontal or nearly horizontal. ... Ochre or Ocher (pronounced OAK-ur, from the Greek ochros, yellow) is a color, usually described as golden-yellow or light yellow brown. ... A constructed wetland is an artificial marsh or swamp, created for human use, such as wastewater or sewage treatment, as habitat to attract wildlife, or for land reclamation after mining or other disturbance. ...


Environment

The catchment of the Rheidol is dominated by the western maritime exposure of this part of Wales. Rainfall levels are high and ecosystems reflect both high rainfall and the acidic nature of the underlying rocks. Upland Mollinia spp. grassland is common growing on deep deposits of peat. Within the valleys, dense and ancient oak forests with rich understoreys of ferns mosses and lichens are common. In the valley bottom, glacial and alluvial deposits have been worked by man into a relatively low intensive agriculture. National motto: Cymru am byth (Welsh: Wales for ever) Waless location within the UK Official languages English(100%), Welsh(20. ... Peat in Lewis, Scotland Peat is an accumulation of partially decayed vegetable matter. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Subclasses Andreaeidae Sphagnidae Tetraphidae Polytrichidae Buxbaumiidae Bryidae Archidiidae Moss is a type of simple or non-vascular plant, of the class Musci, in the division Bryophyta, that have rhizoids instead of true roots. ... Crustose and foliose lichens on a wall Foliose lichen on basalt Usnea australis, a fruticose form, growing on a tree branch Lichen on rock Lichens are symbiotic organisms made up by the association of microscopic green algae or cyanobacteria and filamentous fungi. ...


Economy and the human influence

Metal mining dominated the economy of the Rheidol valley for many centuries. This has now been replaced by farming (beef, dairy and sheep), forestry and tourism. Bales of hay on a farm near Ames, Iowa A farm is the basic unit in agriculture. ... Beef is meat obtained from a bovine. ... Dairy farm near Oxford, New York, July 2001 In many northern-hemisphere countries a dairy is a facility for the extraction and processing of animal milk (mostly from cows, sometimes from buffaloes, sheep or goats) for human consumption. ... This article is about the animal, sheep; for other meanings of Sheep, see Sheep (disambiguation). ... Forest - Wikipedia /**/ @import /skins/monobook/IE50Fixes. ... A tourist boat travels the River Seine in Paris, France Tourism can be defined as the act of travel for the purpose of recreation, and the provision of services for this act. ...


There are a number of tourist attractions in the Rheidol valley. These include the Devil's bridge waterfalls where three bridges, each built over the previous, span the top of a most spectacular waterfall.


Between Devil's bridge and Aberystwyth runs a narrow gauge steam railway - the Cwm Rheidol Railway. This was originally built to ship metal ore from the mines but now provides a very popular tourist route into the top end of the Rheidol valley Train taking on water, Vale of Rheidol Railway The Vale of Rheidol Railway (VoR) is a narrow-gauge (1 foot 11¾ inches) heritage railway that runs for 11¾ miles between Aberystwyth and Devils Bridge (Welsh Pontarfynach) - in Wales, UK. It was the last steam line to be operated as...


  Results from FactBites:
 
Definition of River Rheidol (487 words)
The River Rheidol is a river of mid Wales.
Even when the mine was closed, a major blowout of water contained in an adit in the late 1960s coloured the whole river an ochre orange colour and greatly added to the concentrations of lead and zinc in the river.
The whole catchment of the Rheidol is dominated by the western maritime exposure of this part of Wales.
River Rheidol - Wikipedia, the free encyclopedia (495 words)
The River Rheidol is a river of mid Wales.
The Rheidol rises in the headwaters of the Nant y Moch reservoir on the western flanks of Plynlimon and then flows south through the village of Ponterwyd on the main Aberystwyth to Rhayader road.
The catchment of the Rheidol is dominated by the western maritime exposure of this part of Wales.
  More results at FactBites »

 
 

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