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🌊 Tide going out · low water in ~7h
3.19

Pothouse Wharf River Station

Afon Tywi 🌊 Tidal
Towy Group catchment • Carmarthenshire • ID: NRW_H060000406 • 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.
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.
(21m ago) • 4 readings/hr • 11 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
3.187 m?
▼ Falling (-4cm/hr)
24h Max
5.188 m
24h Min
3.187 m
Typical Range
2.76 - 5.10
m
Measured rhythm
every 12.3 hours · about 1.0 m
Highest Recorded
6.90 m
5 Nov 2025
Since Feb 2024
Current level is 46% of this
Wales — NRW flood warnings

Wales: 0 severe flood warnings, 0 flood warnings and 5 flood alerts in force. Last successful check: 2026-10-28 01:48:01 UTC.

This gauge’s verified location is inside the area of:

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.

🚽 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

Falling · -104 cm over 5h
28 Oct 01:30 ▼ -0.7 cm 3.187 m
28 Oct 01:15 ▼ -1 cm 3.194 m
28 Oct 01:00 ▼ -2 cm 3.207 m
28 Oct 00:45 ▼ -1 cm 3.226 m
28 Oct 00:30 ▼ -0.5 cm 3.239 m
28 Oct 00:15 ▼ -2 cm 3.244 m
28 Oct 00:00 ▼ -0.7 cm 3.262 m
27 Oct 23:45 ▼ -2 cm 3.269 m
27 Oct 23:30 ▼ -3 cm 3.291 m
27 Oct 23:15 ▼ -2 cm 3.319 m
27 Oct 23:00 ▼ -3 cm 3.341 m
27 Oct 22:45 ▼▼ -5 cm 3.376 m
27 Oct 22:30 ▼▼ -6 cm 3.426 m
27 Oct 22:15 ▼▼ -6 cm 3.485 m
27 Oct 22:00 ▼▼ -9 cm 3.543 m
27 Oct 21:45 ▼▼ -14 cm 3.634 m
27 Oct 21:30 ▼▼ -12 cm 3.774 m
27 Oct 21:15 ▼▼ -15 cm 3.898 m
27 Oct 21:00 ▼▼ -18 cm 4.050 m
27 Oct 20:45 4.226 m

Station Details

  • Monitoring Station: Pothouse Wharf River Station
  • Watercourse: Afon Tywi
  • County: Carmarthenshire
  • Nearest reservoir: Upper Lliedi Reservoir (18.2 km) · 95.4% full (as of 9 Dec 2024)
  • Coordinates: 51°51'14"N 4°18'29"W (51.853800, -4.308000)
  • 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_H060000406
  • NRW telemetry ID: H060000406 Water Level Stage
  • Parameter: Level
  • Unit: m?
  • Typical rise rate: 180 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~12 min (measured reading→publication lag)
  • Tidal: 🌊 Yes — levels follow the tide
  • Distance to the sea: at tidal water here — about 22 km by river (estimated along OS Open Rivers)
  • Lock / structure: No
  • Catchment Area: Towy Group
  • Typical Range: 2.755 – 5.102 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 upstream

Same river system, separate branch

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.

35 storm overflows are traced upstream of this gauge, the nearest 4.7 km away along the river. 7 report discharging now, 27 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.

💧
Dwr Cymru Welsh Water · into River Gwili · 4.7 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Gwili · 7.9 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Nant Crychiau · 8.4 km upstream along the river
Discharging now since
💧
Dwr Cymru Welsh Water · into River Gwili · 9.8 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Afon Cothi · 15.3 km upstream along the river
Discharging now since
💧
Dwr Cymru Welsh Water · into Afon Duad · 15.4 km upstream along the river
Monitor offline: it cannot say whether it is discharging
💧
Dwr Cymru Welsh Water · into River Cothi · 15.8 km upstream along the river
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Nant Gochen · 16.1 km upstream along the river
Not discharging now · last

27 more further upstream, up to 73.3 km away along the river.

Also discharging now further upstream: Cwmduad WwTW Storm Overflow (19.6 km), Brechfa Overflow (28.1 km), Rhosmaen Storm Overflow (42.6 km), Manordeilo Overflow (49.3 km), Cilycwm WwTW Storm Overflow (69.6 km).

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 River Towy · 120 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Towy · 250 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Towy · 360 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Towy · 390 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Unnamed Watercourse · 400 m away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into Tributary Of Afon Tawe · 470 m away in a straight line · no mapped watercourse close enough to be sure
Not discharging now · last
💧
Dwr Cymru Welsh Water · into River Towy · 760 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now
💧
Dwr Cymru Welsh Water · into River Towy · 800 m away in a straight line · discharges into a tidal reach, where the water moves both ways
Not discharging now · last

5 more within 6 km whose connection is not known.

7 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

Loading rainfall and weather data...

How often this river runs high

In a typical year this gauge reaches its typical high of 5.10 m on about 23 days. This year so far: 6 days.

2026 6 days so far
2025 19 days, 5 of them high · 5 high
2024 27 days, 6 of them high · 6 high

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 5.56 m, the level this gauge tops only a few days a year.

Frequently asked questions

Is the Afon Tywi at Pothouse Wharf River Station flooding today?

The current level is 3.19m, which is within the typical range of 2.76 to 5.10m. Flooding is unlikely at this level.

Is the river level rising or falling at Pothouse Wharf River Station?

Based on the most recent readings, the level is currently falling. 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 Afon Tywi at Pothouse Wharf River Station?

The typical range at this station is 2.76m to 5.10m, based on Natural Resources Wales historical data. Levels above 5.10m 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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🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, recorded floods, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →

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.