Poulaphouca Reservoir, officially Pollaphuca, is an active reservoir and area of wild bird conservation in west County Wicklow, Ireland. It is also known locally as Blessington Lake.
It holds 166 billion litres and has a surface area 22.26 km2, making it the largest artificial reservoir in Ireland by capacity and surface area. It has a 27.5-mile shoreline, and is 24.6 miles from the sea.
Wikipedia https://en.wikipedia.org/wiki/Poulaphouca_Reservoir
Address Ireland
Coordinates 53°7'44.107" N -6°31'13.744" E