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The River Moyola or Moyola River stretches for approximately 27 miles from the Sperrin Mountains to Lough Neagh. The Moyola starts a small river (3-5m) for the first few miles of its length and proceeds to expand to a medium sized river (5-20m) and then to a large river (20m+) for its last couple of miles before Lough Neagh. In ancient times, the River Moyola was known as the 'Bior', and served as the border between the Airgiallan kingdoms of Fir Li and Ui Tuirtri. According to Deirdre and Laurence Flanagan in their book, ''Irish Place Names'', the River Moyola dervies its name from ''Magh nÉola'', meaning ''Éolas Plain''.〔Deirdre & Laurence Flanagan, ''Irish Place Names''; ISBN 0-7171-3396-6〕 ==Hydrology== The flow or discharge of the river is measured near to its mouth in Lough Neagh. The catchment area to the gauging station is , which yields an average flow of . The maximum recorded flow between 1971 and 2012 was on 19 January 1988. The catchment has a varied geology including limestone, schist, shale and basalt with outcrops of chalk. Overlying this solid geology are superficial deposits of glacial till, plus sand and aggregates. Land use is primarily grassland, with areas of bog and heathland, but includes the towns of Magherafelt and Maghera.〔 The average annual rainfall in the catchment is , which is somewhat higher than the average for United Kingdom at .〔(【引用サイトリンク】title=Climate tables UK 1961-90 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「River Moyola」の詳細全文を読む スポンサード リンク
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