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Braint water levels

1 gauge, at Afon Braint River Station. No storm overflow upstream is discharging now. Gauges in Isle of Anglesey; levels are checked every 15 minutes.

1gauge
0overflows upstream discharging

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Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Afon Braint River Stationtidal—2.81 mAOD 32m 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 Braint above one of its gauges, from the source down. The river map knows where gauges are, not every stream, so a tributary without a gauge is not listed here.

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

Where the Braint goes

No gauge below Afon Braint River Station is known on the river map.

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.

Storm overflows upstream

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

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

Official figures for 2025, for the overflows traced upstream of Afon Braint River Station: 235 spills over 2,810 hours in total, across all 3.

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 Braint includes the smaller streams that join it there.

Above Afon Braint River Station, the Braint’s highest gauge3 overflows
  • Pont Y Crug Llanddaniel Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Afon Braint · 8.4 km by river above Afon Braint River Station · 2025: 57 spills, 528 h
  • Train Station Gaerwen Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Tributary Of Afon Braint · 7.9 km by river above Afon Braint River Station · 2025: 74 spills, 1,484 h
  • Llangaffo WwTW Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Unnamed Stream · 2.7 km by river above Afon Braint River Station · 2025: 104 spills, 798 h · placed on the river by its position alone

Near these gauges, connection not known

Within 3 km of one of the Braint’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • Lon Fain Dwyran Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into River Braint · 180 m from Afon Braint River Station in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 2 spills, 0.8 h
  • Arosfa Road Dwyran Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Afon Braint · 450 m from Afon Braint River Station in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 9 spills, 2.5 h
  • Newborough WwTW Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Afon Braint · 1.5 km from Afon Braint River Station in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 82 spills, 560 h
  • Millbank Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Unnamed Watercourse · 2.6 km from Afon Braint River Station in a straight line · no mapped watercourse close enough to be sure · 2025: 10 spills, 10 h
  • Green Terrace Llangaffo Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Unnamed Ditch · 2.9 km from Afon Braint River Station in a straight line · its watercourse is not on the river map · 2025: 121 spills, 2,333 h

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.