Lough Sheelin – Cavan's wild trout lake

Overview

Lough Sheelin holds one of Ireland’s best wild brown trout populations, and for a week or two around the Mayfly hatch in late May and June the whole lake is out in boats after them. It’s a limestone lake on the border where Cavan meets Westmeath and Meath – about 8 km long and 4 km wide, with ten islands – fed and drained by the River Inny on its way to the Shannon.

The shoreline is rocky bays, sandy coves and wooded banks. Those sheltered feeding grounds are what make the fishing, but the lake also draws winter birdwatchers and walkers to the beech woods on its western side.

History & conservation

Lough Sheelin’s reputation as a fishery didn’t survive the 20th century intact. From the 1970s onward, agricultural runoff and nutrient enrichment cut the native brown trout population hard, and the arrival of invasive zebra mussels in 2000 disrupted things further.

A long recovery effort led by Inland Fisheries Ireland, the Lough Sheelin Trout Preservation Association and local landowners turned it around, through phosphorus reduction, water-quality monitoring and careful management. The lake is also a Special Protection Area (site code 004065) under the EU Birds Directive, which keeps development and recreation in check to protect the wintering waterfowl.

Two ruined castles still stand on the water: Crover Castle on its island, thrown up by Thomas O’Reilly in the late 14th century, and Ross Castle on the southern shore, built in 1532 by Richard Nugent.

What to see & do

Fishing

Anglers rate Lough Sheelin the benchmark for brown trout in Ireland. The high-pH limestone water and shallow average depth – about 4.4 m, dropping to 15 m at the deepest – feed heavy insect life, and that feeds the trout. Of the fish over eight inches, surveys put around 40,000 in the prized 2–4 lb bracket; the average trout runs about 3 lb, and a few reach double figures every year.

• Season – the fishing year runs from 1 March to 12 October. March brings wet-fly action on shrimp and louse; April and May the olive and buzzer hatches. The Mayfly hatch in late May and June is the highlight, followed by spent-gnat and caenis swarms in July, and a strong autumn feed on daphnia and sedges through September and October.
• Permits – a valid permit from Inland Fisheries Ireland’s Midland Fisheries Group is mandatory, bought online through the IFI portal or from licensed local agents.
• Regulations – Bye-law 949 sets a 36 cm minimum size, a two-trout daily bag limit and one rod per angler. Trolling is banned from 1 March to 16 June. Catch-and-release is encouraged but not required; undersized trout must go back promptly, and rods must be attended at all times on boats.
• Access – public jetties at Inny Bridge, Finea, Rusheen Bay, Crover Pier and Kilnahard Pier. Private berthage can be arranged at Sailors Garden and Ross Shore.
• Guided services – Lough Sheelin Guiding Services runs a full ghillie and guide service seven days a week, with boat hire and instruction; rates include the boat and guide, and slots fill fast during the Mayfly.

The Sheelin Classic, the lake’s big annual competition, packs the jetties for a weekend each year.

Birdwatching & nature

As a Special Protection Area, the lake matters nationally for wintering waterfowl. Between November and March the shallow bays and reed beds hold goldeneye, tufted duck, pochard and great crested grebe, and the islands give gulls and terns undisturbed nesting in summer. Early mornings are best, particularly along the northern shore near Inny Bridge where the water is calm and the light is soft.

Walking & scenic views

Mullaghmeen Forest, on the western edge, is the largest planted beech forest in Ireland – roughly 1,000 acres of Coillte woodland – with a set of looped walks from a single trailhead:

• White Loop – 8 km, moderate, through mature beech.
• Red Loop – 4 km and easier, and the one to pick: its summit gives the best views over Lough Sheelin.
• Shorter 3 km and 5 km loops branch off the same car park.

Further out, Ballyconnell and its Ballyconnell Bridge and Canal Walk sit a short drive north, Drumlane Abbey and Clough Oughter Castle are within reach, and the 5,000-year-old passage tombs at Loughcrew are a short drive south.

Practical information

Getting there

Lough Sheelin sits about 100 km northwest of Dublin, roughly two hours by road via the M3 through Virginia or the M4 through Mullingar. The R154 runs along the western shore; signage for Finea, Mountnugent and Kilnaleck leads to the public jetties and forest trailheads. Parking is available at most access points, though spaces fill quickly on dry summer weekends.

Without a car it’s harder. The 109X (Dublin–Cavan, roughly hourly) and the 30 (Dublin and the airport to Donegal, about every 90 minutes) both stop in Virginia, a short taxi from the northern shore; local buses run on from Virginia towards Mountnugent, but there is no stop at the lake itself. For an overnight, Crover House Hotel is on the northern shore, with guesthouses, B&Bs and self-catering (and a set of shepherd’s huts) scattered around Mountnugent and Finea.

Safety & etiquette

• Life jackets are mandatory on all boats and worth wearing when wading near steep limestone edges.
• Petrol outboards are discouraged in sheltered bays to limit noise and fuel contamination; electric motors or oars are preferred.
• Stay on marked forest tracks to protect fragile limestone grassland and avoid disturbing ground-nesting birds.
• Carry out all litter, including line and tippet.

Book your IFI permit online at least a week ahead, as daily limits fill during the Mayfly, and get to the public jetties by first light to take a good position before the crowds.