Overview
Lough Derravaragh sits just north of Mullingar, cradled between the villages of Castlepollard, Crookedwood and Multyfarnham in County Westmeath. The lake’s Irish name, Loch Dair-brech, translates to “lake of oaks,” a fitting reference to the mature woodlands that fringe its shores. Stretching roughly 10 km long and 4 km wide, it covers 9.14 km² with a maximum depth of 23 m. Fed and drained by the River Inny, the lake is part of the Lough Derravaragh Natural Heritage Area and has held Ramsar wetland status since June 1996.
Its alkaline, mineral-rich waters create an ideal habitat for aquatic life, supporting strong populations of brown trout, pike, bream, roach and perch. This makes it a well-regarded destination for anglers, while the sheltered bays and gentle winds attract canoeists, paddle-boarders and small sailboats. Beyond the water sports, the lake’s quiet atmosphere and layered history draw visitors looking to slow down and explore the midlands.
History & Legend
The landscape around Lough Derravaragh carries centuries of human activity. Ringforts cluster on the eastern hills of Ranaghan, hinting at early farming communities, while local tradition links the area to the Viking chieftain Turgesius, who reportedly maintained strongholds in the region during the ninth century.
The lake’s most enduring association comes from Irish mythology. According to the Children of Lír tale, four royal siblings were cursed by a jealous stepmother and transformed into swans. They spent three hundred years drifting across Lough Derravaragh before migrating to the Straits of Moyle and eventually the Atlantic Ocean. The story has woven itself into the local identity, and visitors often keep an eye out for the swans that still grace the waters today.
Archaeological evidence reinforces the area’s ancient significance. On the Kiltoom shoreline, artificial crannóg islands once provided safe, defensible settlements. A Stone Age dug-out canoe recovered from the lakebed in the 1970s confirms that people have been navigating these waters for millennia.
What to See & Do
Boating and Angling
A small commercial boat hire service operates on the north-western shore, just off the N4 and about four kilometres from Multyfarnham. The operator provides fiberglass boats fitted with outboard engines, lifejackets and pay-as-you-go fuel. These craft are well-suited for quiet cruising or targeting the lake’s wild brown trout and pike.
Anglers should note that the open season runs from 1 March to 12 October, and a valid Irish angling licence is mandatory. Licences can be purchased online or at local tackle shops in Mullingar. The lake’s hard water produces active feeding fish, making early mornings and overcast days particularly productive.
Water Sports & Wildlife
When the wind is light, the lake’s broad, shallow surface becomes a playground for paddlers. Canoeing and stand-up paddleboarding are popular, and the predictable conditions make it a good introduction for beginners. Small dinghies and inflatable sailboats also perform well in the sheltered channels.
The surrounding wetlands and reed beds are ecologically significant. Designated as a Special Protection Area under the EU Birds Directive, the lake hosts nationally important populations of Greenland white-fronted geese, whooper swans, tufted ducks, mute swans, little grebes, coots and lapwings. Land-based wildlife includes otters and Irish hare, while the mineral-rich margins support rare stoneworts and fen plants like black bog rush. Binoculars and a quiet approach go a long way when birdwatching here.
Walking & Heritage Trails
On the south-eastern shore, Knockeyon rises to 215 metres, offering one of the best vantage points over the lake. The ascent leads to the ruins of Saint Cauragh’s chapel and an adjacent holy well. Local tradition holds that Saint Cauragh, after leaving the monastery at Kells, found refuge on the hill and discovered a miraculous spring that sustained her. The chapel stones remain a quiet reminder of early Christian devotion in the midlands.
For a gentler pace, the Donore Woodland Walk at the north-western end provides a family-friendly circuit featuring a fairy garden, small bridges and dense woodland cover. A shorter, marked Lough Derravaragh Walk (approximately 0.6 miles / 1 km) follows the shoreline and is ideal for a quick stretch after boating or fishing.
Longer routes are easily accessible via the Old Rail Trail Greenway and the Royal Canal Greenway, both within a 10 km radius. Hill walkers can also head east to Mullaghmeen, which contains Ireland’s highest planted forest and the county’s highest peak.
Practical Information
Lough Derravaragh is straightforward to reach via the N4, with a clearly signposted turn-off for the boat hire site near Multyfarnham. Free, first-come, first-served parking is available at the hire point and at Donore Caravan Park. There is no admission charge for the lake, walking routes or wildlife viewing, and the area remains accessible year-round.
Accommodation & Facilities
- Derravaragh Holiday Park (Donore) offers caravan pitches, a café and a mini-golf course. Contact: +353 44 93 71500 or visit their Facebook page.
- Castle Varagh Hotel in Castlepollard provides en-suite rooms, dining and direct access to the lake’s northern approaches.
- Nearby attractions include Fore Abbey, Belvedere House & Gardens, and Lough Ennell, all within a short drive.
Getting Around Regular Bus Éireann services run between Mullingar and Castlepollard. The nearest stop to the lake is in Multyfarnham, though timetables can be infrequent on weekends, so checking schedules in advance is advisable.
Visitors are asked to stay on marked paths, particularly near the bog edges and reed beds, to protect fragile habitats. While most trails are flat and well-maintained, the climb to Knockeyon includes steep, uneven sections that require sturdy footwear. Bring a light jacket even in summer, as the lake’s open surface can generate a noticeable breeze by midday.