Fishing in Eryri National Park

Eryri — known in English as Snowdonia — is a park built around high ground, and its water reflects that.

Glacial lakes sit in cwms carved into the mountains, rivers run fast off the slopes, and the whole system drains toward the coast through valleys that have held fishing communities for centuries.

The park covers a large part of northwest Wales, and within it the fishing divides roughly between the upland lakes, the main river systems, and the lower reaches where migratory fish push in from the sea.

Llyn Tegid, near Bala, is the largest natural lake in Wales and the most structured fishery in the park. It holds 14 species, with perch, roach, pike, trout, grayling, and eels making up the main quarry. Winter weekends draw coarse anglers to the foreshore.

Before fishing here, you need both a rod licence and a Llyn Tegid fishing permit — the permit is available from the pay-and-display machines in the foreshore car park. The park's wardens can point you toward the better spots.

For closed seasons, rules, and current conditions, the Bala and District Angling Association is the right contact. The upland lakes are a different proposition entirely.

Llyn Ogwen and Llyn Cwellyn hold wild brown trout — genuinely wild, not stocked — and the fish run small, typically in the six to ten ounce range, but in excellent condition.

Llyn Crafnant, Llyn Dywarchen, and the Cregennan lakes are noted for trout and are better stocked than the high glacial waters. Trawsfynydd Lake has hosted international competitions and is regarded as one of the stronger reservoir fisheries in Wales.

The rivers carry salmon and sea trout when runs allow. Access to the better fishing rivers has historically been difficult — riparian rights are tightly held across much of Wales, and Eryri is no exception. Permission matters here more than in many places.

The Afon Conwy, Afon Glaslyn, and Afon Mawddach are among the named systems within or bordering the park, and each has its own permit arrangements through local angling associations rather than the park itself.

A rod licence is required for anyone aged 13 or over fishing for salmon, trout, freshwater fish, smelt, or eel in Wales. Eryri National Park does not issue rod licences — those come through GOV. UK.

Check current rules with the park and the relevant local association before you go; seasons and access arrangements change, and the park's own fishing page is the most reliable starting point.