River Senni · Afon Senni

The only gauge on the River Senni 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 Senni on the live map →

Every gauge on the River Senni, right now

Gauge km above
the mouth		 Level
now		 Against
its record		 Percentile Trend
Pont Hen Hafodnear Defynnog 4 0.39 m Normal 81st ▬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 Senni

normalPont Hen Hafod River StationPont Hen HafodWhere it is in Wales
The course of the River Senni, 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 Sennybridge (Pontsenni), the Afon Senni runs 12 km. Its gauge holds 25 years of readings, and that is what today's level is compared with.

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.