15:25Eira DdoeSeries 4Episode 2: Brwydr Dyffryn CeiriogBBC One Wales Duration: 30 minutes Fri 6th Feb 1981, 15:25 on BBC One Channel IslandsLocal residents recall the events of 1923, when plans were proposed to flood Ceiriog Valley to provide water for Warrington and a campaign was launched to oppose the scheme.GenresFactualHistoryBrandEira DdoeSeriesEira Ddoe: Series 4 Source: BBC Online