Knockananig Reservoir

Knockananig is a 4.3km walk surrounding Knockananig Reservoir and is part of the Blackwater Way (Avondhu) Trail, a 109km long distance trail.

It takes approximately one hour to walk and has a height variation of 150m. The trail takes walkers around the reservoir and onto a meandering path through a fabulous beech wood where it ascends to a clearing that gives breathtaking views of the Galtee Mountains. The walk continues through Coillte forestry paths and on rural farm-roads that lead back to the Reservoir carpark.

Please take care as some sections may have obstacles such as protruding roots, fallen trees, rocks etc especially after heavy rain or storms. The route is appropriate for people with a moderate level of fitness. Good footwear is recommended.

Knockananig Reservoir is linked to Fermoy via the Blackwater Way (Avondhu) which is 7km walk each way.

Route Details


This is a Moderate Trail. Trails will have steeper gradients, may have rough underfoot conditions, with protruding roots and natural features. Strong footwear recommended.





Highlights Of The Route


Knockananig Reservoir, also called the Waterworks by the locals, was built in 1886 and provided water to Fermoy until the 1970’s. The area around it was upgraded in the 1980’s and left for public enjoyment.

Views of the Valley

Visitors to the reservoir will experience an abundance of wildlife, magnificent views of the Galtee and Comeragh Mountains, as well as Castle Hyde Estate and Cregg Castle.

Carraig an Aifreann

During the time of Penal Laws (some priests were outlawed), Mass Rocks were used as altars in religious ceremonies in remote areas. Today, ceremonies are still held at Carraig an Aifreann every August.


Feel free to download the Knockananig Map. Please note that the representation on the map of roads, tracks, and paths may be subject to change and should not be interpreted as conferring a right of way. Avondhu Blackwater Partnership always recommend the use of a the Discovery Series maps when walking and the use of GPS.