Address
Merthyr Tydfil, UK
Fishery Information
Source material from www.fishingwales.net
Llwyn On Reservoir, also known as Llwyn Onn, is the lowest reservoir in the Cwmtaf valley and is situated on the A470 between Merthyr Tydfil and Brecon. It is the largest of the three reservoirs in the Taff valley, covering 150 acres.
Fishing Methods and Fish Stock
The reservoir is well stocked with rainbow trout and also has a good number of wild brown trout. Fly fishing, spinning, and worming are all permitted fishing methods.
Tickets and Pricing
Fishing at Llwyn On Reservoir is controlled by Welsh Water. Day tickets are available online or by telephone with the Fishing Passport (01874 712074).
Season and Opening Hours
There is a closed season at Llwyn On Reservoir. The reservoir usually opens at the end of March, typically on the last weekend of the month (e.g., 28th March 2022) and remains open until 30th October. Check the Fishing Passport website for specific details on opening hours and dates.
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