River Thaw · Afon Ddawan
Both gauges on the River Thaw 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 Thaw on the live map →Every gauge on the River Thaw, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Cowbridge FWSnear East Village | 14 | 0.45 m | Normal | 80th | ▬steady |
| Gigman Bridgenear Flemingston (Trefflemin) | 7 | 0.40 m | Normal | 80th | ▬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 Thaw
About this river
From its highest reach down to its mouth near East Aberthaw (Dwyrain Aberddawan), the River Thaw runs 21 km. The lowest 2 km are tidal, where a gauge reads the tide as much as the river. Its gauges hold between 29 and 39 years of readings, and that is what today's levels are compared with.
- Cowbridge STW - a rain gauge near East Village, not a river level