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Shown here are all the major rivers and tributaries of Ireland with their lengths (in kilometres and miles). Starting with the Northern Ireland rivers, and going in a clockwise direction, the rivers (and tributaries) are listed in regard to their entry into the different seas: the Irish Sea, the Celtic Sea and the Atlantic Ocean. Also shown are two tables. ''Table 1'' shows the longest rivers in Ireland with their lengths (in kilometres and miles), the counties they flow through, and their catchment areas (in square kilometres). ''Table 2'' shows the largest rivers in Ireland (by mean flow) in cubic metres per second. The longest river in Ireland is the River Shannon, at . The river develops into three lakes along its course, Lough Allen, Lough Ree and Lough Derg. Of these, Lough Derg is the largest. The Shannon enters the Atlantic Ocean at the Shannon Estuary. Other major rivers include the River Liffey, River Lee, River Swilly, River Foyle, River Lagan, River Erne, River Blackwater, River Nore, River Suir, River Barrow (The Three Sisters), River Bann, River Slaney, River Boyne, River Moy and River Corrib. == Longest Irish Rivers (with Basin areas) == Lengths obtained from the Ordnance Survey of Ireland: ''Rivers and their Catchment Basins 1958'' (Table of Reference), and for the rivers Bann and Erne - ''Notes on River Basins'' by Robert A. Williams TABLE 1 a * The length of the River Shannon from the Shannon Pot to Limerick City is 〔 with a basin area of 11,700 km2. * The River Shannon's overall length (to Loop Head), using the Owenmore River (Glangevlin) as source, is ,〔Shannon River Basin: Furthest sourceShannon River Basin#Furthest sources〕 11 km (7 ml) longer than the Shannon Pot source. * The River Shannon's overall length (to Loop Head), using the Boyle River's furthest source, is ,〔Boyle River (Ireland)〕 making the Boyle-Shannon river the ''longest natural stream flow (source to sea) in Ireland'', 31.6 km (19.5 ml) longer than the Shannon Pot source. * The River Shannon is a traditional freshwater river for just about 45% of its total length. Excluding the tidal estuary from its total length of , if one also excludes the lakes (L. Derg , L. Ree , L. Allen 〔(Ask about Ireland )〕 plus L. Boderg, L. Bofin, L. Forbes, L. Corry) from the Shannon's freshwater flow of , the Shannon as a freshwater river is only about long. b * The total basin area of the Three Sisters (Barrow, Nore and Suir) is 9,207 km2. c * The traditional length given for the River Bann is 80 miles (129 km) which is the combined total length of Upper and Lower Bann rivers and doesn't include Lough Neagh. * The total length of the Ulster Blackwater from its source to the sea via L. Neagh and the Lower Bann is 186.3 km (115.75 mi),〔Ulster BlackwaterRiver Blackwater, Northern Ireland〕 surpassed, in Ireland, only by the Shannon and Barrow rivers. This is the longest stream flow (source to sea) in Ulster.〔(European Commission Rivers Map )〕 d * The total basin area of the 6 km River Corrib is 3,138 km2〔 * The total length of the River Robe's journey from its source near Ballyhaunis to Galway Bay (via Lough Mask, Cong canal and river, Lough Corrib and River Corrib) is .〔River Robe〕 This is the longest stream flow (source to sea) within the Corrib Basin.〔 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「Rivers of Ireland」の詳細全文を読む スポンサード リンク
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