River Twrch · Afon Twrch
The only gauge on the River Twrch is normal and steady.
Read from one river-level gauge at 12:00 on 28 October 2026 GMT, and read again every fifteen minutes.
See the River Twrch on the live map →Every gauge on the River Twrch, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Ddol Lasnear Ffarmers | 5 | 0.51 m | Normal | 75th | ▬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 Twrch
About this river
From its highest reach down to its mouth near Caeo, the Afon Twrch runs 260 km. The course above is drawn in two weights: the bright line is where Ordnance Survey Open Rivers calls the channel the Afon Twrch, and the faint line, about 22 km of it, is the same water running under another name, past a lake or a weir pool. Its gauge holds 35 years of readings, and that is what today's level is compared with.
- Pen Y Coed - a rain gauge near Foel, not a river level