Garren Brook

The only gauge on the Garren Brook is normal and rising.

Read from one river-level gauge at 11:15 on 28 October 2026 GMT, and read again every fifteen minutes.

See the Garren Brook on the live map →

Every gauge on the Garren Brook, right now

Gauge km above
the mouth		 Level
now		 Against
its record		 Percentile Trend
Marstow Millnear Goodrich Cross 1 0.47 mASD Normal 6th ▲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.

The course of the Garren Brook

normalMarstow MillMarstow MillWhere it is in Wales
The course of the Garren Brook, 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 Old Forge, the Garren Brook runs 28 km.

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.