Blackwater

Blackwater, the name of several rivers in Ireland. 1. Rises in the S. of county Tyrone, which it divides from Monaghan and Armagh. It flows into Lough Neagh. At one time it was the boundary between the English Pale and the Tyrone O'Neills. 2. Rises on the borders of Kerry and Limerick. Its course is for the most part easterly, and it falls into St. George's Channel through Youghal harbour. It is celebrated for the beauty of its scenery. There are many other streams with this name.