Reservoir · Powys · open water conditions information
Llyn Clywedog is a reservoir in Powys, one of 9 Powys inland waters covered by NippyIndex.
As an inland water it is not tidal, so NippyIndex shows weather and surface conditions for it rather than a sea-state reading.
The information shown is drawn from published weather data and a seasonal surface-temperature model for UK inland waters.
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