Ireland is defined by water. From thundering waterfalls hidden in ancient forests to mirror-still lakes cradled by mountains, the island’s waterways are some of its greatest treasures. As World Water Day falls on 22 March, there has never been a better moment to celebrate the rivers, lakes and waterfalls that make Ireland truly magical.

Powerscourt Waterfall, County Wicklow
At 121 metres, Powerscourt is Ireland’s highest waterfall and one of its most breathtaking sights. Set within the grounds of the Powerscourt Estate in the Wicklow Mountains, the waterfall cascades down a rocky cliff face surrounded by ancient oak and beech woodland. The grounds are perfect for a picnic, and the mist rising from the base on a sunny morning is genuinely unforgettable.
The River Shannon
Ireland’s longest river stretches 360 kilometres from the Shannon Pot in County Cavan to the Atlantic Ocean at Limerick. Along the way it passes through Lough Allen, Lough Ree and Lough Derg — three vast lakes that offer world-class fishing, boating and birdwatching. The Shannon has shaped Irish life for thousands of years, and a cruise along its waters reveals a landscape that has barely changed since the monks built their round towers along its banks.
Torc Waterfall, Killarney
Tucked inside Killarney National Park, Torc Waterfall is one of the most visited natural attractions in the south-west. A short woodland walk from the car park brings you to the cascade, which tumbles 20 metres over mossy rocks. Climb the steps beside it for a view across the treetops to the Lakes of Killarney — on a clear day you can see Muckross Lake shimmering below.
Lough Corrib, County Galway
The largest lake in the Republic of Ireland, Lough Corrib covers over 17,000 hectares and contains more than 1,300 islands. It is renowned among anglers for its brown trout and salmon, and the ancient monastic island of Inchagoill — accessible only by boat — is one of Ireland’s most atmospheric heritage sites. The lake connects to the sea via the short River Corrib through Galway city centre.
Glencar Waterfall, County Leitrim
W.B. Yeats immortalised this waterfall in his poem The Stolen Child: “Where the wandering water gushes / From the hills above Glen-Car.” The slender 15-metre cascade drops into a wooded glen with a viewing platform, and on a windy day the water is blown back upwards in a dramatic mist. It is easily one of the most poetic spots in Ireland.
Why Ireland’s Waterways Matter
Ireland’s freshwater systems support extraordinary biodiversity, from Atlantic salmon runs to rare pearl mussels. They are also central to Irish culture, inspiring poets, painters and musicians for centuries. On World Water Day, take a moment to appreciate these remarkable natural wonders — and if you can, visit one for yourself.
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