The Elan Valley, three miles west of Rhayader in the heart of the Cambrian Mountains, is one of the most dramatic settings for trout fishing anywhere in Wales – four reservoirs (Caban Coch, Garreg Ddu, Pen-y-Garreg, and Craig Goch) covering around 850 acres of genuinely wild upland water, all supporting strong populations of wild brown trout alongside stocked fish.
A Serious Fly Fishing Destination
The Elan Valley reservoirs are recognised Troutmaster waters and have hosted the Welsh National Bank Fly Fishing Championships on multiple occasions – a clear marker of the quality of fishing on offer here. Around 35km of shoreline is covered by permits, fly-fishing only, with a small fish and wildlife conservation area excluded near Pen-y-Garreg Dam. Claerwen Reservoir, a further water in the same system, adds another 20km of fly-only shoreline.
The Visitor Centre
An extensive visitor centre sits at the entrance to the Elan Valley, with a café/restaurant, museum, displays, a shop, and tourist information alongside the fishing permits themselves. It’s worth treating a visit here as more than a fishing trip – full details on permits, pricing, and the visitor centre are on the Elan Valley official website.
Targeting Wild Brown Trout
Unlike some of the heavily-stocked reservoirs in this series, Elan Valley’s appeal leans more toward genuinely wild brown trout fishing across dramatic upland scenery. Our brown trout species guide covers the behaviour patterns worth knowing before fishing wild fish specifically, and our trout in October guide is useful if you’re planning a late-season visit.
Elsewhere in Mid Wales
Elan Valley pairs naturally with a wider Mid Wales trout fishing trip taking in Llyn Clywedog and Lake Vyrnwy, both covered elsewhere in this series.

Sarah Marsh came to fly fishing through her father, who kept a rod on a small syndicate water in Devon. She spent her teens fishing stocked reservoirs and gradually worked her way toward wild fish on moving water – first on rain-fed freestone rivers in Wales, then on the Hampshire chalk streams she now considers home water.
She holds a level 2 APGAI fly casting qualification and guides informally on the River Test and, from June to September, on a private beat on the River Tay for Atlantic salmon. Her personal best brown trout came from the Itchen at 4lb 1oz; she’d sooner not talk about the salmon that came off at the net last August.
At The River Bend, Sarah writes the game fish species guides, fly fishing technique articles, and the legal content covering trout and salmon regulations.
Covers: Brown trout, rainbow trout, sea trout, Atlantic salmon, fly fishing, chalk streams, Scottish rivers, close season and regulation articles