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Llanelli TideGauge

TBC 🌊 Tidal
Loughor Group catchment • Llanelli • Carmarthenshire • ID: NRW_H059800711 • Level
This gauge is tidally influenced — levels rise and fall with each tide, so rapid changes here are normal and don't necessarily indicate flooding.
(19m ago) • 4 readings/hr • 0 views

Set water level alerts

Get notified about Llanelli TideGauge — tick as many as you like, they all share the notify settings below.

You'll be notified when this gauge is rising more than 0.10 m/hr — a sign of rapidly increasing water levels.

Each one is saved as its own alert — pause or remove them individually any time.

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

Current Level
2.066 mAOD?
Trend unavailable
24h Max
5.047 mAOD
24h Min
1.001 mAOD
Typical Range
-
Measured rhythm
every 12.3 hours · about 2.6 m
Highest Recorded
5.47 mAOD
12 Mar 2024
Since Feb 2024
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Flood predictions aren't generated for tidal gauges — their levels are driven by the tide, not by catchment rainfall, so the forecast models would have no skill here.

Recent Readings

Rising · +101 cm over 5h
27 Oct 16:45 ▲▲ +79 cm 2.066 mAOD
27 Oct 16:30 ▲▲ +27 cm 1.272 mAOD
27 Oct 16:15 ▲ +0.2 cm 1.003 mAOD
27 Oct 16:00 ▼ -0.4 cm 1.001 mAOD
27 Oct 15:45 ▬ steady 1.005 mAOD
27 Oct 15:30 ▼ -0.5 cm 1.004 mAOD
27 Oct 15:15 ▼ -0.3 cm 1.009 mAOD
27 Oct 15:00 ▼ -0.3 cm 1.012 mAOD
27 Oct 14:45 ▼ -0.4 cm 1.015 mAOD
27 Oct 14:30 ▼ -0.6 cm 1.019 mAOD
27 Oct 14:15 ▲ +0.6 cm 1.025 mAOD
27 Oct 14:00 ▼ -1 cm 1.019 mAOD
27 Oct 13:45 ▼ -0.3 cm 1.032 mAOD
27 Oct 13:30 ▼ -0.1 cm 1.035 mAOD
27 Oct 13:15 ▼ -0.3 cm 1.036 mAOD
27 Oct 13:00 ▼ -0.1 cm 1.039 mAOD
27 Oct 12:45 ▼ -0.8 cm 1.040 mAOD
27 Oct 12:30 ▼ -0.3 cm 1.048 mAOD
27 Oct 12:15 ▼ -0.7 cm 1.051 mAOD
27 Oct 12:00 1.058 mAOD

Station Details

  • Monitoring Station: Llanelli TideGauge
  • Watercourse: TBC
  • Nearest Town: Llanelli
  • County: Carmarthenshire
  • Nearest reservoir: Lower Lliedi Reservoir (5.3 km) · 100.0% full (as of 9 Dec 2024)
  • Coordinates: 51°39'58"N 4°9'49"W (51.666000, -4.163700)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Status: Active
  • Station Type: Tidal / coastal station (inferred)
Technical details: references, datum, range, flow archive
  • Station Reference: NRW_H059800711
  • NRW telemetry ID: H059800711 Water Level Stage
  • Parameter: Level
  • Unit: mAOD?
  • Typical rise rate: 226 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~12 min (measured reading→publication lag)
  • Tidal: 🌊 Yes — levels follow the tide
  • Lock / structure: No
  • Catchment Area: Loughor Group

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.

Same river, order estimated

Same river system, separate branch

Nearby

💧 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.

7 storm overflows are traced upstream of this gauge, the nearest 1.7 km away along the river. 0 report discharging now, 7 report not discharging.

💧
Dwr Cymru Welsh Water · into River Dafen · 1.7 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 2.1 km upstream along the river
Not discharging now
💧
Dwr Cymru Welsh Water · into River Dafen · 3.3 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 3.5 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 4.0 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 4.0 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 5.5 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 Loughor Estuary · 240 m away in a straight line · discharges to the sea, an estuary or tidal water
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Loughor Outer · 1.2 km away in a straight line · its recorded watercourse is not the one mapped beside it
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Lliedi · 1.2 km away in a straight line · its watercourse is not on the river map
Monitor offline: it cannot say whether it is discharging
💧
Dwr Cymru Welsh Water · into Tributary Of The River Dafen · 1.6 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now
💧
Dwr Cymru Welsh Water · into River Dafen · 2.2 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 2.2 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now
💧
Dwr Cymru Welsh Water · into River Dulais · 2.3 km away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Dafen · 2.3 km away in a straight line · its watercourse is not on the river map
Not discharging now

17 more within 6 km whose connection is not known.

9 other overflows within 6 km are downstream of this gauge or on another branch of the river network, so they are 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

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Frequently asked questions

Is the TBC at Llanelli TideGauge flooding today?

The latest recorded level is 2.07mAOD. Compare it with the recent history on the chart above to judge whether levels are unusually high.

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.

Embed this gauge on your website

Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.

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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.