River Nore

The River Nore, together with the River Suir and the River Barrow, is one of Ireland's major rivers in the south-east region. The 140-kilometer-long (87-mile) river drains 2,530 square kilometers (977 square miles) of Leinster and Munster, which includes sections of three counties (Tipperary, Laois, Kilkenny). It is one of the Three Sisters rivers, along with the River Suir and the River Barrow.

Starting in County Tipperary's Devil's Bit Mountain, the river travels southeast, then south, until meeting the River Barrow at Ringwood and the Barrow railway bridge at Drumdowney, County Kilkenny, before emptying into the Celtic Sea at Waterford Harbour, Waterford. The River Nore's long-term average flow rate is 42.9 cubic metres per second (m3/s).

The River Nore is home to the critically endangered Nore freshwater pearl mussel's only known existing population, and much of its length is designated as a Special Area of Conservation. In the townland of Borrisnoe, County Tipperary, the Nore rises on the eastern slopes of the Devil's Bit Mountain.

It produces a lovely V-shaped river valley farther south, notably near the tidal limit settlement of Inistioge. The Dinan, the Breagagh near Kilkenny City, the King's River, the Little Arrigle, and the Black Water are all major tributaries of the Nore.

Length: 140 km