The River Nire is a grade 3 whitewater river located near the village of Ballymacarbery in the Nire Valley, County Waterford. The river requires heavy recent rainfall to run at a paddleable level, with the most enjoyable conditions occurring at approximately 1 metre or slightly above on the gauge.

The character of the river is defined by short rapids, small drops, and waves suitable for surfing. There is also a series of drops that offer multiple line options, making it well-suited for practicing techniques such as the boof stroke. Well-positioned pools follow each drop, which aids in equipment recovery when necessary. The river runs alongside a road for much of its length, making access straightforward.

The primary hazard on the river is trees, which are particularly prevalent on the first section. Paddlers should account for the possibility of a longer outing than expected, as the surfing opportunities can extend time on the water considerably — trips of four hours have been reported.

The valley setting is notably scenic, and red squirrels have been observed along the riverbanks, making it of interest to paddlers with an eye for wildlife. The river is considered slightly more technically demanding than the Bundorragha river, providing a reasonable step up in challenge for paddlers looking to progress.

For those interested in whitewater rafting rather than kayaking, the outfitter I-CANOE has been suggested as a contact for guided experiences in the southern part of Ireland.