Powerscourt Waterfall (), is a 121-metre high waterfall, on the River Dargle near Enniskerry in County Wicklow, Ireland. Situated at the base of the Glensoulan Valley, the waterfall is overlooked by Djouce and Maulin . The waterfall flows continuously all year, falling in a horsetail-fan, and ranks as the highest waterfall in Ireland. The waterfall is in the Powerscourt Estate, and is open to the public for a visitor fee.