River Ystwyth · Afon Ystwyth

Both gauges on the River Ystwyth are normal.

Read from 2 river-level gauges at 12:00 on 28 October 2026 GMT, and read again every fifteen minutes.

Every gauge on the River Ystwyth, right now

Gauge	km above the mouth	Level now	Against its record	Percentile	Trend
Cwmystwythnear Pont-rhyd-y-groes	32	0.39 m	Normal	80th	▲rising
Pont Llolwynnear Llanfarian	5	1.44 m	Normal	86th	▬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 Ystwyth

Where it is in Wales

The course of the River Ystwyth, drawn from Ordnance Survey Open Rivers. Each gauge is coloured by where its level sits today. A grey dot is a gauge we do not rank, and a hollow ring is one that is not reporting. North is up.

About this river

From its highest reach down to its mouth near Trefechan, the Afon Ystwyth runs 38 km. Its gauges hold between 36 and 38 years of readings, and that is what today's levels are compared with.

Pwll Peiran - a rain gauge near Devil’s Bridge (Pontarfynach), not a river level

This is not a flood-warning service. For flood warnings in Wales go to Natural Resources Wales; in England, the Environment Agency. In an emergency call 999. The map cannot see the sea, surface water, drains, or any one address.