No rivers of any importance rise in the county or pass through it. The Moy, which separates it from Sligo, after receiving the waters of Loughs Cullen and Conn, flows in a broad stream by Ballina into the bay of Killala. The bar has deep water after great floods, but is dangerous from its liability to shift. A few years since it was passed by vessels drawing 14 feet water; it is now often fordable in dry summers: sloops, however, ascend within a mile of Ballina. It has been proposed to form a lock at Belleek castle, by which vessels of heavy burden might come up to the town, if a passage were cut through the limestone ledges that obstruct the navigation, and measures are in progress to effect this object.

The Blackwater, which for a short distance forms the boundary between Mayo and Galway, has an underground course for three miles near Shrule; after its re-appearance it falls into Lough Corrib. The Aile, which is navigable for boats of six feet draught for a distance of five miles from Lough Mask, also disappears for some time, after having sunk under a stratum of limestone. The Castlebar river is navigable from Lough Conn for the distance of four miles: the Lung, which flows into Lough Carra, admits boats from the lake, which ascend the river about three miles. The other rivers are little more than mountain streams: the principal are the Owenmore, falling into Blacksod bay, and remarkable for the great quantity of water it sometimes carries from the mountains; the Deel, the Robe, the Erriv, and the Carnamart.

County Mayo | Mayo Baronies and Towns | Mayo Topography | Mayo Lakes | Mayo Bays | Mayo Islands | Mayo Soil | Mayo Agriculture | Mayo Geology | Mayo Manufacturing | Mayo Fisheries | Mayo Rivers | Mayo Roads | Mayo Antiquities | Mayo Society

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