Overview
The Castletown River (Irish: Abhainn Bhaile an Chaisleáin) is a working trout fishery, not a river to fish as you please: salmon fishing is closed outright, and even for trout you’ll need barbless hooks, a club permit and a State licence. It runs about 45 km from near Newtownhamilton in County Armagh, where it’s known as the Creggan River, gathering the Kilcurry and Falmore before it cuts through Dundalk and empties into Dundalk Bay. If you’re not carrying a rod, the reason to come is the estuary at low tide and the wooded stretch around Toberona Bridge.
Angling
The river is managed by the Dundalk & District Brown Trout & Salmon Anglers Association, established in 1926 and one of Ireland’s older clubs, with a clubhouse on the bank. The rules are strict and worth reading before you travel:
- Salmon fishing is closed on the Castletown.
- Brown and sea trout: 1 March to 12 October.
- Daily bag limit of two trout. Brown trout under 28 cm or over 35 cm must be returned; sea trout under 30.5 cm or over 40 cm must be returned.
- Angling Bye-law No. 982 of 2020 requires single or double barbless hooks and prohibits worm bait. Catch and release is encouraged.
Permits come through the club’s online portal, and you must also hold a valid State fishing licence. The pools downstream of Toberona Bridge are among the river’s deepest and fish well after a spring flood.
Birdwatching and estuary walks
Where the river meets the sea at Dundalk Harbour it opens into a wide tidal estuary, one of the east coast’s better spots for coastal and migratory birds. A maintained path runs from Newry Road to Tain Bridge with clear views of the waterline, and at low tide the exposed mudflats become a feeding ground for curlew, oystercatcher, redshank and gulls. Past the docks, the Navvy Bank Walk follows the water out to Soldiers Point, where fresh and salt water mix and kingfishers turn up in summer.
Time it with a low tide or there’s little to see: high water covers the flats that make the estuary worth the walk. Check the Dundalk Bay tide tables before heading out.
Toberona Bridge and riverside walks
Just outside the town centre, the single-arch stone Toberona Bridge (also called St John’s Bridge) crosses the river in a quiet, wooded setting beside the old St John’s Well. It’s reputedly 19th-century, though there’s no firm date on record. The bank here is lined with mature trees, a shaded corridor that links the town to the wider floodplain, and it’s a good short walk; photographers tend to come at dawn or in autumn, when the low sun catches the arch and the water runs slow and clear.
Practical information
- Location: Toberona, just outside Dundalk town centre, County Louth.
- Access: By car via the M1 (Exit 13) or on foot from Dundalk. A small roadside car park with a handful of free spaces sits beside the bridge.
- Permits: Required for angling; book online through the club and carry a current State licence.
- Best times: Angling March to October, best after spring or early-summer rain; birdwatching at low tide, and early mornings to keep disturbance down.
- Facilities: Basic roadside parking at the bridge. Toilets and cafés are in Dundalk town centre, a short walk or drive off.
Nearby
South in a wooded valley is Mellifont Abbey, Ireland’s first Cistercian monastery, and the Norman ruins of Castle Roche look out over the Cooley foothills. Closer to hand, Dún Dealgan Motte (Cú Chulainn’s Castle) stands on a ridge over the river, though there’s no signposting and little parking, so it takes some finding. Book your angling permit online a few days ahead in summer to secure a slot.