River Gwili · Afon Gwili
The only gauge on the River Gwili is high 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 Gwili on the live map →Every gauge on the River Gwili, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Glan Gwilinear Abergwili | 16 | 1.21 m | High | 96th | ▬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 Gwili
About this river
From its highest reach down to its mouth near Ystradaeron, the Afon Gwili runs 33 km. The course above is drawn in two weights: the bright line is where Ordnance Survey Open Rivers calls the channel the Afon Gwili, and the faint line, about 18 km of it, is the same water running under another name, past a lake or a weir pool. Its gauge holds 41 years of readings, and that is what today's level is compared with.