River Erch · Afon Erch
The only gauge on the River Erch 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 Erch on the live map →Every gauge on the River Erch, right now
| Gauge | km above the mouth |
Level now |
Against its record |
Percentile | Trend |
|---|---|---|---|---|---|
| Erchnear Pencaenewydd | 10 | 0.18 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 Erch
About this river
From its highest reach down to its mouth near South Beach (Marian-y-de), the Afon Erch runs 20 km. The lowest 2 km are tidal, where a gauge reads the tide as much as the river. Its gauge holds 49 years of readings, and that is what today's level is compared with.