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Home › Rivers › Clywedog

Clywedog water levels

3 gauges. None of the 2 that can be compared with a typical high is above it. Gauges in Powys, Wrexham; levels are checked every 15 minutes.

3gauges
0above normal
Several distinct UK rivers share the name “Clywedog” — sections below are grouped by catchment.

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Gauges

Clywedog — Severn

2 stations in this catchment

StationTownLevel nowStatusTrend
Clywedog Reservoirstructure—-8.62 m 17m agoWithin its typical range—
Bryntail River Station 330 m by river—0.15 m 32m agoWithin its typical range—

Clywedog — Dee (Cheshire)

1 station in this catchment

StationTownLevel nowStatusTrend
Bowling Bank River Stationplace estimatedBowling Bank0.17 m 17m agoWithin its typical range—

Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Clywedog above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

Clywedog — Severn

No gauged tributary joins the Clywedog above Bryntail River Station on the river map. Streams without a gauge are not counted here.

Where the Clywedog goes

Below Bryntail River Station, its water next reaches Llanidloes River Station, a gauge on River Severn, 5.1 km by river downstream.

Clywedog — Dee (Cheshire)

No gauged tributary joins the Clywedog above Bowling Bank River Station on the river map. Streams without a gauge are not counted here.

Where the Clywedog goes

Below Bowling Bank River Station, its water next reaches Farndon, a gauge on Dee, 19.4 km by river downstream.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Clywedog — Dee (Cheshire)

Streams without a gauge

Named streams on the river map that flow into the Clywedog and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.

Storm overflows upstream

Clywedog — Severn

None of the storm overflows FloodRadar holds is traced upstream of Bryntail River Station on the river map. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow.

Clywedog — Dee (Cheshire)

23 storm overflows are traced upstream of Bowling Bank River Station, the Clywedog’s lowest gauge on the river map: on the Clywedog itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 21 not discharging
  • 2 offline or silent: 2 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Bowling Bank River Station: 597 spills over 1,970 hours in total, across the 22 that have a figure. 1 has no 2025 figure.

Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Clywedog includes the smaller streams that join it there.

Above Bowling Bank River Station, the Clywedog’s highest gauge23 overflows

1 other overflow within 3 km of these gauges is placed below the Clywedog’s lowest gauge or on another river, so not listed.

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © Dŵr Cymru Welsh Water, from its Storm Overflow Map. Annual figures for Wales: Dŵr Cymru Welsh Water’s return to Natural Resources Wales, as compiled by The Rivers Trust, Open Government Licence.

Wave tracker for this river → Powys rivers → Wrexham rivers → All UK rivers