River Levels
River Levels

Thames Tideway at Chelsea

Latest Tidal Level

-0.300m

At 1:00pm, Tuesday 17th January GMT

Within the usual range for this location

Falling, -0.300 from previous measurement

Warning: This data is stale! For some reason, we have not been able to obtain updated levels for over 24 hours. The current displayed level is probably incorrect and you should not rely on it.


This is a tidal level, measured from mean sea level rather than from the river bed. It can, therefore, be negative, and does not give any indication of water depth. Tidal levels are not necessarily updated frequently, and may not reflect tidal movements throughout the day.

Flood Warning Areas Covering Here

Tidal Thames riverside from the Thames Barrier to Putney Bridge

No current or recent warnings.

Other Nearby Flood Warning Areas

Tidal Thames from Vauxhall Bridge to Battersea Bridge

No current or recent warnings.

Tidal Thames from Battersea Power Station to Battersea Bridge

No current or recent warnings.

Tidal Thames at Westminster

No current or recent warnings.

Tidal Thames from Hungerford Bridge to Battersea Power Station

No current or recent warnings.

Seven Day Level Chart

Long Term Level Chart

Darker blue shaded areas on long term data indicate maximum and minimum levels for the date (you may need to zoom in closer to see them).

Long term data may have gaps where the API data was not available.

Download long term data as csv

Note: CSV data will include any outlying values that have been ignored by our graphing system as probably erroneous (eg, because they are ridiculously high compared to the values either side of them). It is your responsibility to filter these out if necessary.

Important! If you are planning to retrieve the csv data automatically, you must read and understand the limitations on the data and its availability.

Location and Technical Data

  • Monitoring Station: Chelsea
  • Watercourse: Thames Tideway
  • Nearest Town/Village: Chelsea
  • Local Authority: Wandsworth
  • Ceremonial County: Greater London
  • Coordinates: 51°29'3"N 0°8'58"W (51.484369,-0.149631)
  • OS Grid: TQ285777 (528578,177781)
  • Mapcode (Local): GBR BQ.L2
  • Mapcode (Global): VHGQZ.CY7G
  • Open Location Code: 9C3XFVM2+P4
  • Maidenhead Locator System: IO91wl26
  • Environment Agency Location ID: 0008
  • Environment Agency Gauge ID: 0008-level-tidal_level-i-15_min-mAOD
  • Operational Area: Tidal Thames
  • Catchment Area: Thames Transitional & Coastal
  • UK Hydrometric Area: Thames
  • Environment Agency Region: Thames
  • Level Datum: Above Ordnance Datum (AOD)

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

The usual range of the Thames Tideway at Chelsea is between -2.36m and 4.24m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the Thames Tideway at Chelsea over the past 12 months has been between -2.45m and 4.38m. It has been between these levels for at least 150 days in the past year.

The highest level ever recorded at the Thames Tideway at Chelsea is 4.95m, reached on Friday 16th December 2005 at 2:00pm.

Note that this data may not take account of recent measurements, as we wait until a level has been verified by the Environment Agency before adding it to our records.

Nearby Monitoring Locations

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