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Water Level Easing
Easing — down from 2.09 at 10:00, now 2.07
2.07

Afon Rhyd Y Valley River Station

TBC
Anglesey catchment • Isle of Anglesey • ID: NRW_H102003809 • 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 • 2 views

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Current Level
2.069 mAOD?
▼ Easing
24h Max
2.089 mAOD
24h Min
2.040 mAOD
Typical Range
1.02 - 2.38
mAOD
Highest Recorded
2.96 mAOD
18 Dec 2025
Since Feb 2024
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -2 cm over 5h
27 Oct 16:30 ▬ steady 2.069 mAOD
27 Oct 16:15 ▬ steady 2.069 mAOD
27 Oct 16:00 ▼ -0.1 cm 2.070 mAOD
27 Oct 15:45 ▬ steady 2.071 mAOD
27 Oct 15:30 ▬ steady 2.072 mAOD
27 Oct 15:15 ▬ steady 2.073 mAOD
27 Oct 15:00 ▬ steady 2.074 mAOD
27 Oct 14:45 ▼ -0.1 cm 2.074 mAOD
27 Oct 14:30 ▬ steady 2.075 mAOD
27 Oct 14:15 ▬ steady 2.075 mAOD
27 Oct 14:00 ▬ steady 2.076 mAOD
27 Oct 13:45 ▼ -0.2 cm 2.077 mAOD
27 Oct 13:30 ▬ steady 2.079 mAOD
27 Oct 13:15 ▬ steady 2.079 mAOD
27 Oct 13:00 ▼ -0.2 cm 2.080 mAOD
27 Oct 12:45 ▼ -0.4 cm 2.082 mAOD
27 Oct 12:30 ▲ +0.3 cm 2.086 mAOD
27 Oct 12:15 ▼ -0.2 cm 2.083 mAOD
27 Oct 12:00 ▬ steady 2.085 mAOD
27 Oct 11:45 2.084 mAOD

Station Details

  • Monitoring Station: Afon Rhyd Y Valley River Station
  • Watercourse: TBC
  • County: Isle of Anglesey
  • Nearest reservoir: Cefni (11.6 km) · 100.0% full (as of 9 Dec 2024)
  • Coordinates: 53°9'55"N 4°18'48"W (53.165300, -4.313200)
  • 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_H102003809
  • NRW telemetry ID: H102003809 Water Level Stage
  • Parameter: Level
  • Unit: mAOD?
  • Typical rise rate: 2 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~12 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Anglesey
  • Typical Range: 1.023 – 2.376 mAOD

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.

Nearby

Rainfall & Weather

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How often this river runs high

In a typical year this gauge reaches its typical high of 2.38 m on about 36 days. This year so far: 3 days.

2026 3 days so far
2025 36 days, 11 of them high · 11 high
2024 6 days patchy data

Counted from each day's highest reading. Days with missing or implausible readings are left out, so a year marked patchy may have run high more often than shown. The darker part is days above 2.68 m, the level this gauge tops only a few days a year.

Frequently asked questions

Is the TBC at Afon Rhyd Y Valley River Station flooding today?

The current level is 2.07mAOD, which is within the typical range of 1.02 to 2.38mAOD. Flooding is unlikely at this level.

Is the river level rising or falling at Afon Rhyd Y Valley 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 TBC at Afon Rhyd Y Valley River Station?

The typical range at this station is 1.02mAOD to 2.38mAOD, based on Natural Resources Wales historical data. Levels above 2.38mAOD 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.