Llwyn-onn Reservoir
Merthyr TydfilCF48 2HT
| Water type | Reservoir |
|---|---|
| Location | Merthyr Tydfil, Wales |
| Postcode | CF48 2HT |
| Rod licence | Environment Agency / Natural Resources Wales rod licence required, £36.80/year for 2 rods in 2026, buy at gov.uk |
Data: GilledIt venue directory, July 2026. Confirm details with the fishery before travelling.
The key facts for this water are in the table above. No direct contact details are on record.
Open in Google Maps →About Llwyn-onn Reservoir
Llwyn-onn Reservoir is a reservoir in Wales. UK reservoirs are often managed for trout or coarse fishing through a water company or club, so check for day tickets and access before travelling. See it on the map and log your session in GilledIt.
Details gathered from public sources. Confirm with the venue before travelling.
Own or run Llwyn-onn Reservoir?
Put your fishery in front of more anglers
Your listing is free forever. A featured listing adds your photos, a booking button and a partner badge, and pins your venue to the top of nearby venue pages and your county page, so anglers browsing the waters around you see yours first.
Nearby venues
Other fishing spots within 25km
Cantref Reservoir
4.0 km away · Powys · CF48 2HY
Beacons Reservoir
6.9 km away · Powys · LD3 8NL
Jepson's Pond
8.2 km away · Caerphilly · CF48 4AB
Butetown Reservoir
9.7 km away · Rhymney, Caerphilly · NP22 5QT
bream; carp; gudgeon; perch; pike; roach; rudd; tench
Llyn Cwm Llwch
9.9 km away · Powys · LD3 8NF
Fochriw Feeder Pond
11.2 km away · Darran Valley, Caerphilly · CF81 9NB
carp; pike
Llwyn-onn Reservoir: frequently asked questions
Yes, Llwyn-onn Reservoir is a fishing venue in Merthyr Tydfil (postcode CF48 2HT). Contact the fishery directly to confirm rules and bookings.
On rivers in England and Wales the coarse-fishing close season runs from 15 March to 15 June inclusive. Most stillwaters and canals, including commercial fisheries, stay open all year, though individual venues set their own rules, so check before travelling.
Yes, anyone aged 13 or over fishing for freshwater fish in England or Wales needs a rod licence, even on private waters like Llwyn-onn Reservoir. In Wales the licence is issued by Natural Resources Wales, but it is the same scheme as the Environment Agency's in England: one licence covers both countries and you buy it through the same gov.uk service. A 12-month 2-rod licence is £36.80 in 2026, and juniors aged 13–16 fish free but must register. Read our full guide at /blog/fishing-licence-uk-guide.
Directory data checked July 2026: locations re-checked for 2,704 venues, 236 official websites verified and 25 dead links removed.
Plan your visit to Llwyn-onn Reservoir
Check the rules, grab a ticket, and go fishing. Confirm prices and opening times with the venue before travelling.
GilledIt is free on both stores. Download it for iOS or get it on Google Play.