River Tawe · Afon Tawe
All four gauges on the River Tawe are normal and steady.
Read from 4 river-level gauges at 12:00 on 28 October 2026 GMT, and read again every fifteen minutes.
See the River Tawe on the live map →Every gauge on the River Tawe, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Craig Y Nosnear Craig-y-nos | 38 | 0.66 m | Normal | 85th | ▬steady |
| Teddybear Bridgenear Ystradgynlais | 28 | 0.92 m | Normal | 84th | ▬steady |
| Ystradgynlaisnear Glan-rhyd | 26 | 0.63 m | Normal | 77th | ▬steady |
| Ynystanglwsnear Ynystawe | 10 | 1.08 m | Normal | 83rd | ▬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 Tawe
About this river
From its highest reach down to its mouth near St Thomas, the Afon Tawe runs 42 km. The course above is drawn in two weights: the bright line is where Ordnance Survey Open Rivers calls the channel the Afon Tawe, and the faint line, about 13 km of it, is the same water running under another name, past a lake or a weir pool. Its gauges hold between 11 and 43 years of readings, and that is what today's levels are compared with.
- Dan Yr Ogof - a rain gauge near Glyntawe, not a river level
- Ystradgynlais - a rain gauge near Ystalyfera, not a river level
- Trebanos - a rain gauge near Pontardawe, not a river level
- Morfa - on the tidal Tawe at Landore (Glandŵr), reading 3.60 m. What a gauge reads here is the tide as much as the river, so it is not ranked against a record