River Seiont · Afon Seiont
The only gauge on the River Seiont 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 Seiont on the live map →Every gauge on the River Seiont, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Peblic Seiontnear Caeathro | 5 | 0.93 m | Normal | 91st | ▬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 Seiont
About this river
From its highest reach down to its mouth near Caernarfon, the Afon Seiont runs 12 km. The lowest 2 km are tidal, where a gauge reads the tide as much as the river. Its gauge holds 35 years of readings, and that is what today's level is compared with.