Clettwr Brook · Powys
Clettwr
Passport scheme
Passport scheme
Check the booking details below before you travel.
Bag limit of 2
You may take up to 2 fish. Check the rules below.
About Clettwr
The Clettwr gets its name from the Welsh for rough water, and the stream is a mix of gorges, riffles, pools and minor falls. It runs off the slopes of Cefn Clawdd and enters the Wye at Erwood, seven and a half miles south of Builth Wells. For its size it holds a good population of trout, and it benefits from two Foundation fish passes.
The Passport calls it real mountain stream fishing and a challenge to the most hardy, and says it can be extremely rewarding. Go with a small brook rod of six and a half to seven and a half feet rated 2 to 4 weight, and be prepared for a climb, difficult going and perhaps a 30 minute trek to the start.
It is fly fishing only, the limit is two trout per rod, and any trout under 9 inches must be returned. Dogs are not allowed. The stream holds native white-clawed crayfish, so waders, nets and tackle must be sprayed with Virkon before and after fishing. It is a Wild Stream beat: it is booked through the Fishing Passport, or fished on a Wild Stream Season Permit.
How you can fish here
- Methods
- Fly Only
How to book
Day tickets and booking
- FP The Fishing Passport Day tickets
Day tickets
Part of the Passport’s Wild Streams: book a day ahead online or by phone (bookings close at 6pm the day before), or fish it on a Wild Stream Season Permit, which for 2026 costs £100 for one rod or £140 for two.
View fishing agent
Fishing details
- Water type
- Tributary
Stocking and fish species
Rules and policies
Fishing rules for Clettwr
Fly fishing only. Two trout may be taken per rod; trout under 9 inches must be returned (byelaw). No dogs. National byelaws apply. Waders, nets and tackle must be sprayed with Virkon before and after fishing.
Where you'll fish
Location
Approximate locationExact location is hidden at the owner's request. This beat is on the Clettwr Brook.
Conditions on the Clettwr Brook
The river
Clettwr Brook is a small tributary of the upper Wye in Powys, several miles below Builth Wells. OpenStreetMap spells it Cletwr. There are many streams called Clettwr in Wales, including a river in…
View the Clettwr Brook guideFishingBeats is an independent guide with no affiliation to the fisheries we list. Listings are editorial and unpaid, and are not supplied or approved by the fishery. See our listings policy. Listing details are compiled by FishingBeats and may change or contain mistakes. Some services, such as tuition, ghillies, or accommodation, may only apply to certain packages and not to standard day tickets. Always confirm pricing, fishing details, and what is included directly with the beat before you book. Spotted something wrong? Email hello@fishingbeats.com and we will correct it.
FAQ
Clettwr FAQs
Practical questions anglers ask before fishing Clettwr, from tickets to tactics.
01How many rods are allowed on Clettwr at any one time?
02What species can I expect to catch on Clettwr?
03Do I need to wade, or can I fish from the bank?
04Is a ghillie available, and do I need one?
05Where do I park, and how do I access the beat?
06What tackle should I bring?
07What happens if conditions are poor on the day I've booked?
08Are dogs allowed on the beat?
Worth a read
Passport scheme
Ask when you book
