Munster Blackwater

The Blackwater, also known as the Munster Blackwater (Irish: An Abhainn Mhór, meaning "Big River"), is a river in Ireland that flows through the counties of Kerry, Cork, and Waterford. It springs in County Kerry's Mullaghareirk Mountains and flows eastward into County Cork, passing through Mallow and Fermoy.

It then runs through Lismore in County Waterford before abruptly turning south at Cappoquin and ultimately pouring into the Celtic Sea at Youghal Harbour. The Blackwater is 169 kilometers (105 miles) long in all. The River Blackwater has a total catchment area of 3,324 km2. The River Blackwater's long-term average flow rate is 89.1 cubic metres per second (m3/s).

The Munster Blackwater is known as one of the top salmon-fishing rivers in the United States. Salmon stocks have plummeted in recent years, as they have in many Irish and British rivers, although the Irish government outlawed commercial salmon netting off the coast of Ireland in November 2006.

On June 11, 1996, the Blackwater Estuary was included to the Ramsar List of Wetlands of International Importance. It is also a Special Protection Area (SPA) under the European Union's Birds Directive, extending from Youghal New Bridge to the peninsula of Ferry Point, at the river's outflow to the sea.

Length: 169 km