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Home › Rivers › Ogmore

Ogmore water levels

3 gauges. None is above its typical high. 8 storm overflows upstream are discharging now. Gauges in Bridgend; levels are checked every 15 minutes.

3gauges
0above normal
8overflows upstream discharging

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Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Brynmenyn River StationBrynmenyn0.80 m 16m agoWithin its typical range—
Springfield Gardens (Morfa Brook) River Stationplace estimated—0.51 m 16m agoWithin its typical range—
6.4 km by river below Brynmenyn River Station
Bridgend River Station—0.91 m 16m 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 Ogmore above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

2 gauged tributaries, 4 gauges

Llynfi

Joins the Ogmore between Brynmenyn River Station and Bridgend River Station, no more than 5.9 km by river above Bridgend River Station.

Maesteg River Station0.37 m 16m agoWithin its typical range
8.3 km by river
Coytrahen River Station0.62 m 16m agoWithin its typical range
1.6 km by river
Aberkenfig River Stationtidal0.91 m 31m agoWithin its typical range

Its water passes Bridgend River Station and every gauge below it on the Ogmore. It does not pass Brynmenyn River Station or the gauges above it.

Where the Ogmore goes

No gauge below Bridgend 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.

Streams without a gauge

Named streams on the river map that flow into the Ogmore 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.

  • Afon Garw (joins about 550 m above Brynmenyn River Station)
  • Ogwr Fach (joins about 4.4 km above Brynmenyn River Station)

Storm overflows upstream

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

  • 8 report discharging now
  • 39 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 Bridgend River Station: 2,359 spills over 18,934 hours in total, across the 46 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 Ogmore includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →

Above Brynmenyn River Station, the Ogmore’s highest gauge19 overflows · 5 discharging now
Ogwr Fawr, above Ogmore Vale River Stationjoins the Ogmore above Brynmenyn River Station3 overflows
  • Commercial Street Nant Y Moel Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Ogwr Fawr River · 2.7 km by river above Ogmore Vale River Station · 2025: 88 spills, 217 h
  • Oakfield Terrace Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Nant Y Ffosp · 2.1 km by river above Ogmore Vale River Station · 2025: 8 spills, 2.3 h
  • Cwrt Gwalia Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Ogwr Fawr River · 310 m by river above Ogmore Vale River Station · 2025: 18 spills, 137 h
Between Brynmenyn River Station and Bridgend River Station4 overflows
Llynfi, above Maesteg River Stationjoins the Ogmore above Bridgend River Station11 overflows · 1 discharging now
Llynfi, above Coytrahen River Stationjoins the Ogmore above Bridgend River Station9 overflows · 2 discharging now
Llynfi, above Aberkenfig River Stationjoins the Ogmore above Bridgend River Station1 overflow
  • Riverside Coytrahen Overflow Not discharging
    Dwr Cymru Welsh Water · into River Llynfi · 1.5 km by river above Aberkenfig River Station · 2025: 10 spills, 6.0 h

Near these gauges, connection not known

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

  • East Cricklewood Close Bridgend Overflow Not discharging
    Dwr Cymru Welsh Water · into River Ogmore · 1.8 km from Bridgend River Station in a straight line · no mapped watercourse close enough to be sure · 2025: 26 spills, 45 h
  • West Cricklewood Close Bridgend Overflow Not discharging
    Dwr Cymru Welsh Water · into River Ogmore · 1.8 km from Bridgend River Station in a straight line · no mapped watercourse close enough to be sure · 2025: 19 spills, 29 h
  • Ewenny No.2 Storm Overflow Discharging now since
    Dwr Cymru Welsh Water · into River Ewenni · 1.9 km from Bridgend River Station in a straight line · not connected to this gauge on the river map · 2025: 141 spills, 3,008 h
  • Ewenny No.1 Overflow Not discharging
    Dwr Cymru Welsh Water · into River Ewenni · 1.9 km from Bridgend River Station in a straight line · not connected to this gauge on the river map · 2024: 16 spills, 158 h

2 other overflows within 3 km of these gauges are placed below the Ogmore’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.

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