page_title: Trawsfynydd
section_title: Llyn Trawsfynydd, and power stations
hierarchical_section_title: Trawsfynydd / Llyn Trawsfynydd, and power stations
caption_attribution_description: English: Footbridge across Llyn Trawsfynydd
context_page_description: Trawsfynydd is a linear village in Gwynedd, Wales, adjacent to the A470 north of Bronaber and Dolgellau near Blaenau Ffestiniog.
  The total community area is 12,010 hectares with a population of only 973. – the area is sparsely populated with each hectare inhabited by an average 0.07 persons. The village is typical of many Welsh villages. There is one grocery shop, one public house, a newsagent, a chemist, garage, petrol service station, and a branch of a large agricultural merchants. The community includes Bronaber.
context_section_description: The village is close to Llyn Trawsfynydd, a large man-made reservoir, which was originally built between 1924 and 1928 to supply water for Maentwrog hydro-electric power station.
  
  The original flooding of the area in the 1920s to create the lake involved the drowning of some two dozen properties, some of historical significance, but there was little objection at the time. The new power station was regarded as a good thing, and indeed on its completion was capable of supplying the whole of North Wales' electricity needs. 
   However, there was certain objection to the loss of rights of way across the former land, necessitating long detours round the new lake. In response to this, a small road was built along its western shore, and a footbridge (still standing) across the narrowest part of the lake.
  The lake was subsequently also used to supply cooling water to the twin reactor Trawsfynydd nuclear power station, which was used for the commercial generation of electricity for the UK national grid.
  Four dams were built to create the lake, one of these being subsequently rebuilt after construction of the nuclear power plant. Whereas previously the Maentwrog power station had access to all of the water in the lake, the needs of the nuclear plant dictated that from then on, the hydro plant should only use the top five feet of water.
caption: Llyn Trawsfynydd footbridge
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