River Dulas · Afon Dulas
The only gauge on the River Dulas 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 Dulas on the live map →Every gauge on the River Dulas, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Rhos-Y-Pentrefnear Llanidloes | 318 | 0.73 mASD | Normal | 84th | ▬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 Dulas
About this river
From its highest reach down to its mouth near Newchapel (Capel Newydd), the Afon Dulas runs 325 km. The course above is drawn in two weights: the bright line is where Ordnance Survey Open Rivers calls the channel the Afon Dulas, and the faint line, about 79 km of it, is the same water running under another name, past a lake or a weir pool. Its gauge holds 19 years of readings, and that is what today's level is compared with.
- Nantgwyn - a rain gauge near Pant-y-dŵr, not a river level