By tradition the Shannon is said to rise in the Shannon Pot, a small pool in the townland of Derrylahan on the slopes of Cuilcagh Mountain in County Cavan, Republic of Ireland, from where the young river appea… See more

The Shannon Callows, areas of lowland along the river, are classified as a Special Area of Conservation. See more

Settlements along the river (going upriver) include Kilrush, Tarbert, Glin, Foynes, Askeaton, Shannon Town, Limerick, Castletroy, Castleconnell, O'Briensbridge, Montpelier, Killaloe, Ballina, Portumna, Banagher… See more

The river began flowing along its present course after the end of the last glacial period.
Ptolemy's Geography (2nd century AD) described a river called Σηνος (Sēnos) from PIE *sai-/s… See more

Though the Shannon has always been important for navigation in Ireland, there is a fall of only 18 m (59 ft) in its first 250 km (160 mi). Consequently, it has always been shallow, with 0.5 m (1 ft 8 in) depths in various pla… See more