Overview
Lough Craghy (Irish: Loch na Cráiche, also recorded as Loch na Creige), affectionately known locally as Tully Lake, is a 110-acre freshwater lake situated in the heart of the Rosses fishery in north County Donegal. Located just east of the coastal town of Dungloe, the lake drains westward into the larger Dunglow Lough. Its shoreline is irregular, dotted with small islands, jutting headlands and sheltered bays that give the water a constantly shifting appearance. The placid surface often mirrors the surrounding low hills and patchwork of bogland, creating a quiet, reflective landscape that feels both remote and accessible.
History & Background
The Rosses region has long functioned as a Gaelic-speaking enclave where fishing, peat cutting and small-scale farming sustained local families. Lough Craghy is one of roughly 130 loughs and rivers that have defined the cultural and economic rhythm of the area for generations. The name derives from the Irish creig or cráig, meaning “rock” or “crag”, a direct reference to the stony outcrops that line sections of its perimeter. While formal historical records for the lake are limited, local oral tradition consistently notes its role as a seasonal fishing ground. Generations of Donegal anglers have passed down knowledge of its waters, maintaining a quiet but dedicated angling culture that continues to this day.
What to See & Do
Angling
The lake’s main draw is the seasonal summer run of sea-trout (Salmo trutta), which migrate from the Atlantic each year. Fish typically begin arriving in July, with the most active period falling in August and September, particularly following wetter months. While the average catch sits around three-quarters of a pound, larger specimens exceeding four pounds are regularly landed, providing a solid challenge for fly-fishers. Anglers commonly use dry flies such as the Blue Daddy, Sedge, Silver Invicta and Golden Olive, which often prompt free rises on the surface.
Bank fishing is permitted across the shoreline, though visitors should be prepared for uneven ground and occasional boggy patches. For those preferring to fish from the water, boat hire can be arranged through Charlie Bonner’s Tackle Shop on The Bridge in Dungloe. The lake’s scattered islands and protected bays offer secluded casting spots, allowing anglers to work deeper water with minimal disturbance.
Walking & Wildlife Watching
An informal loop trail skirts the lake’s perimeter, offering a relaxed way to explore the headlands, low-tide islands and sheltered inlets. The varied shoreline supports a steady presence of birdlife. Waterfowl including swans and various duck species are frequently spotted, while waders and occasional raptors patrol the open water. During spring and early summer, the surrounding heath and bogland fill with heather, gorse and native wildflowers, drawing pollinators and adding seasonal colour to the landscape. The trail is best navigated in sturdy footwear, as the ground transitions between firm paths and softer, natural terrain.
Photography
Lough Craghy’s calm waters act as a natural mirror, particularly in the early morning when Atlantic mist often settles over the low hills. This creates striking reflections of the sky and surrounding crags, offering photographers a range of compositional opportunities. The islands, wade points at low tide and rocky headlands provide distinct vantage points for framing the water against the rugged backdrop. Overcast days can be just as effective as sunny ones, softening contrast and allowing the reflective surface to capture subtle shifts in light and cloud cover.
When to Visit
- Fishing: July to September marks the peak sea-trout season, with early mornings typically yielding the most active feeding.
- Wildlife: Late spring (May to June) brings the highest diversity of migratory waders and nesting birds.
- Photography: Dawn and dusk provide the most atmospheric lighting year-round, while autumn brings rich textures and colour to the surrounding hills and bogland.
Practical Information
- Access & Fees: Lough Craghy is open to the public year-round with no admission charge.
- Angling Permits: A valid Irish angling licence is required, along with a seasonal permit from the Rosses Anglers Association. These can be purchased at Charlie Bonner’s Tackle Shop in Dungloe.
- Facilities: There are no visitor centres, toilets or refreshment options on site. Visitors should bring their own water, snacks and weather-appropriate gear.
- Parking: A small informal layby near the main access point provides space for a few vehicles. There are no parking fees, but visitors should be mindful of local traffic and avoid blocking access routes.
- Dogs: The informal trail is generally dog-friendly, though owners should keep pets under close control to protect ground-nesting birds and respect anglers.
- Safety: The terrain includes uneven ground and boggy sections, particularly after rain. Exercise caution near the water’s edge, avoid wading in unfamiliar areas, and check weather conditions before heading out.
Nearby Attractions
- Dungloe – A colourful seaside town just west of the lake, offering pubs, craft shops, a weekly market and easy access to coastal walks.
- Assaroe – A scenic lake and abbey area in Donegal with additional walking routes and historic ruins.
- The Rosses Coast – The wider region features rugged cliffs, sandy beaches and traditional Irish music sessions in nearby Gaeltacht villages such as Falcarragh and Glencolmcille.
Plan your visit around the July–September trout run or a quiet spring morning when the water is still and the birdlife is most active. Booking your angling permit in advance at Charlie Bonner’s Tackle Shop will save time on the day, and packing a windproof layer is always wise given the lake’s exposed northern setting.