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Water Level Easing
Easing — down from 0.53 at 08:45, now 0.50
0.50

Cowbridge FWS River Station

Thaw
Mid-Glamorgan Group catchment • Vale of Glamorgan • ID: NRW_H058000803 • Level
Natural Resources Wales does not publish a typical range for this gauge, so FloodRadar works one out from its own history (its usual daily lows and highs). It is not an official flood threshold.
(35m ago) • 4 readings/hr • 0 views

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Not an emergency service — if in danger call 999. Alerts rely on EA/SEPA/NRW data and are best-efforts. Terms

Current Level
0.495 m?
▼ Easing
24h Max
0.658 m
24h Min
0.495 m
Typical Range
0.07 - 0.78
m
Highest Recorded
1.32 m
10 Jul 2026
Since Feb 2024
Current level is 38% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -2 cm over 5h
27 Oct 16:30 ▬ steady 0.495 m
27 Oct 16:15 ▬ steady 0.495 m
27 Oct 16:00 ▼ -0.3 cm 0.495 m
27 Oct 15:45 ▼ -0.5 cm 0.498 m
27 Oct 15:30 ▲ +0.5 cm 0.503 m
27 Oct 15:15 ▼ -0.2 cm 0.498 m
27 Oct 15:00 ▼ -0.3 cm 0.500 m
27 Oct 14:45 ▲ +0.1 cm 0.503 m
27 Oct 14:30 ▼ -0.3 cm 0.502 m
27 Oct 14:15 ▬ steady 0.505 m
27 Oct 14:00 ▼ -0.2 cm 0.505 m
27 Oct 13:45 ▼ -0.1 cm 0.507 m
27 Oct 13:30 ▼ -0.2 cm 0.508 m
27 Oct 13:15 ▼ -0.2 cm 0.510 m
27 Oct 13:00 ▬ steady 0.512 m
27 Oct 12:45 ▼ -0.4 cm 0.512 m
27 Oct 12:30 ▼ -0.1 cm 0.516 m
27 Oct 12:15 ▲ +0.1 cm 0.517 m
27 Oct 12:00 ▼ -0.1 cm 0.516 m
27 Oct 11:45 0.517 m

Station Details

  • Monitoring Station: Cowbridge FWS River Station
  • Watercourse: Thaw
  • County: Vale of Glamorgan
  • Nearest reservoir: Llanishen (20.0 km) · 75.4% full (as of 9 Dec 2024)
  • Coordinates: 51°27'42"N 3°26'42"W (51.461600, -3.444900)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Status: Active
  • Station Type: River level station (inferred)
Technical details: references, datum, range, flow archive
  • Station Reference: NRW_H058000803
  • NRW telemetry ID: H058000803 Water Level Stage
  • Parameter: Level
  • Unit: m?
  • Typical data delay: ~12 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Mid-Glamorgan Group
  • Typical Range: 0.072 – 0.777 m

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Nearby Stations

Gauges connected to this river, and others nearby. A distance “by river” follows the river on the map; any other is in a straight line.

Connected downstream

Nearby

Distances by river: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.

💧 Storm overflows upstream of this gauge

Storm overflows whose water reaches this gauge on the mapped river network, nearest first by distance along the river. The status is each water company's monitor: it says whether an overflow is discharging, not how much or what it contains.

3 storm overflows are traced upstream of this gauge, the nearest 150 m away along the river. 0 report discharging now, 3 report not discharging.

💧
Dwr Cymru Welsh Water · into River Thaw · 150 m upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Unnamed Tributary Of The River Thaw · 3.2 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Thaw · 5.2 km upstream along the river
Not discharging now · last

Nearby, connection not known

Within 6 km in a straight line, but the river map cannot say whether their water passes this gauge.

💧
Dwr Cymru Welsh Water · into Stembridge Brook · 3.5 km away in a straight line · not connected to this gauge on the river map
Discharging now since
💧
Dwr Cymru Welsh Water · into Unnamed Tributary Of Nant Dyfrygi · 3.8 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Canna Brook · 4.7 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Llandow Brook · 5.3 km away in a straight line · not connected to this gauge on the river map
Discharging now since
💧
Dwr Cymru Welsh Water · into Tributary Of Colwinston Brook · 5.7 km away in a straight line · not connected to this gauge on the river map
Not discharging now · last

1 other overflow within 6 km is downstream of this gauge or on another branch of the river network, so it is not listed.

These are the water companies' monitor statuses; a spill does not by itself explain a change in the gauge level. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels. Sewage & storm overflows →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

In a typical year this gauge reaches its typical high of 0.78 m on about 23 days. This year so far: 3 days.

2026 3 days, 2 of them high · 2 high so far
2025 24 days, 5 of them high · 5 high
2024 22 days, 4 of them high · 4 high

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 0.92 m, the level this gauge tops only a few days a year.

Frequently asked questions

Is the Thaw at Cowbridge FWS River Station flooding today?

The current level is 0.50m, which is within the typical range of 0.07 to 0.78m. Flooding is unlikely at this level.

Is the river level rising or falling at Cowbridge FWS River Station?

Based on the most recent readings, the level is currently falling slightly. The chart above shows the last 12 hours of measurements by default (up to 7 days), updated roughly every 15 minutes.

What is a normal level for the Thaw at Cowbridge FWS River Station?

The typical range at this station is 0.07m to 0.78m, based on Natural Resources Wales historical data. Levels above 0.78m are higher than usually seen and may indicate a flood risk.

How often is this river level data updated?

Readings are supplied by the Natural Resources Wales gauge. FloodRadar checks for updates roughly every 15 minutes; the timestamp above shows how recent the latest available reading is.

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Wales — NRW flood warnings

Wales: 0 severe flood warnings, 0 flood warnings and 5 flood alerts in force. Last successful check: 2026-10-27 17:03:02 UTC.

No current NRW warning or alert matched this gauge location.

Messages: Natural Resources Wales flood warnings API. Warning-area boundaries: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Reused under the Open Government Licence v3.0. Boundaries from DataMapWales.

River readings supplied by Natural Resources Wales. FloodRadar checks for updates every 15 minutes; the reading timestamp shows the latest available observation.

The Environment Agency’s flood-zone map covers England. In Wales the Area map’s Flood Zones layer is Natural Resources Wales’s Flood Map for Planning, drawn by FloodRadar from its copy of NRW’s shapes where it holds them: an empty patch is not an absence of flood risk. Check NRW for official Welsh flood warnings and information.