River Clywedog · Afon Clywedog
Both gauges on the River Clywedog are normal and steady.
Read from 2 river-level gauges at 12:00 on 28 October 2026 GMT, and read again every fifteen minutes.
See the River Clywedog on the live map →Every gauge on the River Clywedog, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Bryntailnear Llanidloesregulated | 320 | 0.15 mASD | Normal | 25th | ▬steady |
| Bowling Banknear Sutton Green | 59 | 0.16 m | Normal | 48th | ▬steady |
The percentile is where a gauge's latest reading sits in its own record of readings, not how full the channel is. A river sits low most of the time, so a high percentile takes surprisingly little water: at Beddgelert on the Glaslyn, with thirty-six years of record, the ninety-fourth percentile is about 1.05 m - 1.38 m below the highest level ever recorded there.
The course of the River Clywedog
About this river
From its highest reach down to its mouth near Tabor, the Afon Clywedog runs 330 km. The course above is drawn in two weights: the bright line is where Ordnance Survey Open Rivers calls the channel the Afon Clywedog, and the faint line, about 27 km of it, is the same water running under another name, past a lake or a weir pool. Its gauges hold between 22 and 39 years of readings, and that is what today's levels are compared with.
- Clywedog Reservoir - a reservoir. Its gauge measures how far the water has drawn down from a fixed mark, which is not a river level, so it is not in the table above
- Five Fords - a rain gauge near Marchwiel, not a river level