River Dysynni · Afon Dysynni
The only gauge on the River Dysynni is normal and rising.
Read from one river-level gauge at 12:00 on 28 October 2026 GMT, and read again every fifteen minutes.
See the River Dysynni on the live map →Every gauge on the River Dysynni, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Dysynninear Llanegryn | - | 1.15 m | Normal | 95th | ▲rising |
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. A hyphen in the first column means the reach that gauge stands on has no path to the sea in Ordnance Survey Open Rivers - a lake, a culverted stretch or the edge of the mapped area can interrupt a channel - so there is no distance down the river to measure.
The course of the River Dysynni
About this river
From its highest reach down to its mouth near Bryn-crug, the Afon Dysynni runs 14 km. Its gauge holds 41 years of readings, and that is what today's level is compared with.