Trout Fishing in South Wales: The Best Lakes

By Alex Clayton · Updated 24 October 2026

The best trout fishing south wales offers on a day ticket comes from three reservoirs. Llandegfedd, near Pontypool and Cwmbran, is stocked with rainbows and allows fly or ledgered worm. Usk Reservoir in the Brecon Beacons covers 280 acres and allows fly, spinning and worm. Talybont Reservoir, also in the Beacons, is about 318 acres of fly-only water where every wild brown goes back.

That is the shortlist for Brecon Beacons trout fishing and the M4 corridor. The three differ sharply on methods and on whether you can keep a fish, so let the rules pick your water before the scenery does.

Start with the comparison table, then read the water that fits your tackle. For the rest of the country, see our wider guide to fishing in Wales.

South Wales Trout Waters Compared: Methods, Tickets and Seasons

The biggest difference between these waters is not size or setting. It is the method rules. Usk lets you spin, Llandegfedd bans spinning, and Talybont is fly only with every fish returned. Arrive with a spinning rod at the wrong one and it stays in the bag.

Water	Run by and booking	Methods	Keep fish?	Season	Day ticket
Llandegfedd	Welsh Water; online or at the Grab & Go cafe in the Visitor Centre	Fly or ledgered worm from the bank; fly only from boats; no spinning	Depends on permit (catch and release or kill tickets)	Rainbow 1 March to 31 October; brown 20 March to 17 October	Reported for 2026: from £20 (catch and release), £23 (4-fish)
Usk Reservoir	Welsh Water; The Fishing Passport (max 30 tickets a day)	Fly, spinning and worm (west end fly only)	Rainbows within the bag limit; all browns returned	March to end of October	4-fish £23, 6-fish £26, junior 2-fish £9
Talybont Reservoir	Leased by Merthyr Tydfil Angling Alliance; The Fishing Passport	Fly only, bank only	No, all catch and release	20 March to 17 October	Check The Fishing Passport
Crai Reservoir	Managed by Cnewr Estate; honesty box	Wild hill water fished with fly tactics; confirm method rules on site	Wild browns, unstocked	1 April to 30 September	£15 (reported in 2025)
Bargoed Park	Taff Bargoed AA	Fly and worm	Catch and release (barbless) or 3-fish kill	Check with the club	Full day £22.50 (closed until 15 November 2026)

Prices and dates were checked in October 2026 and change yearly. The Llandegfedd price comes from a local news report and the Crai price from a 2025 Fishing in Wales article, not from the operators. Check with the fishery before you travel.

Llandegfedd Lake: The Closest Stocked Trout Water to Cardiff and Newport

Plenty of anglers arrive at Llandegfedd with a spinner in the box and find it is banned. Read the method rules before you pack.

Dŵr Cymru Welsh Water runs the lake, and you buy permits online or at the Grab & Go cafe in the Visitor Centre. From the bank you can fish fly or ledgered worm. From the boats it is fly only, and spinning is not allowed anywhere. There is no catch-and-release permit for worm, so if you plan to fish worm, expect to buy a kill permit and confirm it when you book.

The lake is stocked regularly with rainbows and holds a small head of wild browns. The rainbow season runs from 1 March to 31 October and the brown season from 20 March to 17 October. Bank and boat fishing runs from 8.30am to 5pm.

On price, Cwmbran Life reported 2026 trout permits at £20 for catch and release, £23 for a 4-fish ticket, £25 for 8 fish and £200 for the season. The operator’s page showed no live prices when we checked, so confirm the figure when you book.

One honest caution. Fishing in Wales reports that the trout fishing here has declined in recent years, while the coarse and pike fishing remain strong. That makes Llandegfedd a better fit for an angler who enjoys mixed species than for a trout purist.

Best for: a first stocked trout day close to Cardiff and Newport, or worm anglers.
Skip if: you want to spin, or you want wild fish.

Our full Llandegfedd Lake guide covers the bank areas and boats. Check with the fishery before you travel.

Usk Reservoir: The Most Flexible Water for Fly, Spinning and Worm

If you want to fish a spinner or a worm for trout in the Brecon Beacons, this is the water. It is the only one of the big three that allows all three methods.

Usk is a 280-acre Welsh Water reservoir. The Fishing Passport describes the stock as wild brown trout supplemented with stocked rainbows, and Fishing in Wales also lists perch. Stocking rates and dates could not be confirmed, so don’t plan a trip around fresh fish going in.

Tickets are sold through The Fishing Passport, capped at 30 a day. A 4-fish ticket costs £23, a 6-fish £26 and a junior 2-fish £9. One child aged 13 or under fishes free alongside a paying 6-fish adult, sharing that adult’s bag.

The rules are more detailed than at the other waters:

Fly, spinning and worm only, with the west end fly only.
Power Bait and similar baits are banned.
One rod per angler.
All brown trout must be returned alive.
No fishing from the dam face, the overflow, the feeder streams or the conservation area on the north bank.
Lead weights from 0.06g to 28.4g are prohibited, so carry non-lead shot and weights in that size range.

Fishing runs from 8am until half an hour after sunset or 9pm, whichever is earlier. The season runs from March to the end of October, but exact dates are not on the ticket page, so check them. When we checked, the listing said there was no boat fishing during dam maintenance, expected to finish in late spring 2026. Confirm the boats are back before you plan a boat day.

For trout fishing in South Wales with a junior, or without a fly rod, start here. Our Usk Reservoir fishing guide covers the zones in detail.

Talybont Reservoir: Wild Brown Trout on the Fly, All Catch and Release

Talybont has not been stocked since 2014, yet Fishing in Wales reports its wild brown trout average about 13 inches (33cm), with many between 15 and 18 inches (38cm to 46cm). That is a strong average for unstocked reservoir fish.

The reservoir covers about 318 acres. Welsh Water owns it and Merthyr Tydfil Angling Alliance leases the fishing. Day tickets are sold through The Fishing Passport, and the club also sells them online, at Bait Shack Merthyr and at newsagents in Cefn Coed. The day-ticket price was not shown when we checked, so look it up on The Fishing Passport before you go.

The rules are the strictest of the three:

Fly only, bank only, one rod.
Catch and release for all species. Day tickets have been catch and release since 2017.
No fishing before 8am, with closing time between 7pm and 9pm. Check the time on your ticket.
The season runs from 20 March to 17 October.

The Fishing Passport listing recommends floating lines and small imitative patterns such as the Coch-y-bonddu, with buzzers and sedges for the evening. Fishing in Wales adds that dull, damp or windy summer days fish best.

Since every fish goes back, fish barbless or crush your barbs, and unhook in the water where you can. Wild browns released quickly are the stock for next season.

Don’t wade. Fishing in Wales warns of drop-offs and submerged channels, so fish from firm bank.

The verdict: Talybont offers the best wild trout fishing of the three, but only if you fly fish and are happy to return everything. Our Talybont Reservoir guide covers access and patterns in more depth.

Smaller Wild and Club Waters: Crai, Bargoed Park and the Merthyr Club Tickets

One wild trout reservoir in the Beacons still takes your money through an honesty box.

Crai Reservoir

Crai covers about 100 acres, owned by Welsh Water and managed by Cnewr Estate. The browns are wild and unstocked, typically 8oz to 1lb (about 0.2kg to 0.45kg). The season runs from 1 April to 30 September. A May 2025 article put the honesty-box day ticket at £15, so check the current price.

Fish it like a hill lake. Fishing in Wales suggests a leader of around 18ft carrying two wets on 6lb fluorocarbon, on a 9ft to 10ft rod for a 5 to 7 weight line. April to June and late September are the prime times.

Bargoed Park Lakes

Taff Bargoed AA runs two lakes at Trelewis, about 5 acres in total, holding browns and rainbows. Fly and worm are allowed, and a full day costs £22.50 on either a barbless catch-and-release or a 3-fish kill ticket. The lakes are closed for flood prevention work until 15 November 2026, so check they have reopened.

Merthyr Tydfil AA also sells tickets for Cantref and for the Taff and Usk (Mardy) through the same outlets as Talybont.

Compared with Talybont, Crai is smaller and wilder with smaller fish, while Bargoed is small and stocked, which suits a short session.

Before You Go: Licence, Booking and Picking the Right Water

Paying for a day ticket and then being stopped without a rod licence is an expensive way to end a session. The ticket does not replace the licence.

You need a rod licence from age 13 to fish for trout in Wales. Natural Resources Wales does not sell them, so you buy on GOV.UK. Carry it with you, because the fine for fishing without one is up to £2,500. When we checked in October 2026, the prices were:

1-day: £7.30
8-day: £14.70
12-month trout and coarse (2 rods): £36.80
12-month concession (66 and over, or disabled): £24.50
Juniors aged 13 to 16: free

Wales has its own angling byelaws on top of the licence, set out by Natural Resources Wales. Our fishing licence guide explains the licence types, and the fishing seasons guide covers close seasons.

For booking, Usk and Talybont both go through The Fishing Passport. Usk caps tickets at 30 a day, so book ahead. Llandegfedd sells permits online or at the Visitor Centre cafe.

To pick a water for fishing in South Wales, match it to your method:

Stocked rainbows near Cardiff and Newport, fly or worm: Llandegfedd.
Spinning, worm or bringing juniors: Usk Reservoir.
Wild browns on the fly, happy to return everything: Talybont.
Small wild browns on a hill water, honesty-box ticket: Crai.

Dates and prices change every year, so check with the fishery before you travel.

Frequently asked questions

Where is the best trout fishing in South Wales?

For wild brown trout on the fly, Talybont Reservoir in the Brecon Beacons, where everything is returned. If you want to spin or fish worm, Usk Reservoir allows all three methods and juniors fish cheaply. For stocked rainbows close to Cardiff and Newport, Llandegfedd Lake is the nearest option.

Can you spin for trout at Usk Reservoir?

Yes, in the permitted zones. Usk allows fly, spinning and worm, but the west end is fly only. Power Bait and similar baits are banned, you can use one rod, and every brown trout must be returned alive. Rainbows can be kept within your ticket's bag limit.

Can you keep trout at Talybont Reservoir?

No. Talybont is catch and release for all species, and day tickets have been since 2017. It is also fly only and bank only, with one rod. The wild browns have not been stocked since 2014, so careful handling and barbless hooks keep the fishery going. If you want to take a fish home, Usk or Llandegfedd suit you better.

Do you need a fishing licence to fish for trout in Wales?

Yes, from age 13. You buy the rod licence on GOV.UK, not from Natural Resources Wales, and juniors aged 13 to 16 get theirs free. You also need the fishery's own day ticket or permit, because the licence alone does not give you permission to fish a water. Carry both on the bank.