River Levels
River Levels

River Thames at Caversham Lock (Downstream)

Current River Level


At 7:45am, Thursday 30th May BST
(6:45am, Thursday 30th May GMT)

Below normal for this location

Steady, no change from previous measurement at 7:30am, Thursday 30th May BST

View upstream gauge levels

Flood Warning Areas Covering Here

River Thames from Mapledurham to Sonning

No current or recent warnings.

Properties closest to the River Thames from Scours Lane, Reading to Caversham Lakes

No current or recent warnings.

Other Nearby Flood Warning Areas

River Thames at Reading and Caversham

No current or recent warnings.

River Thames in the Playhatch, Sonning and Sonning Eye area

No current or recent warnings.

River Kennet from Theale down to Reading

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: Caversham Lock
  • Watercourse: Thames
  • Nearest Town/Village: Reading
  • Local Authority: Reading
  • Ceremonial County: Berkshire
  • Coordinates: 51°27'38"N 0°57'49"W (51.460811,-0.963635)
  • OS Grid: SU720740 (472096,174047)
  • Mapcode (Local): GBR QNC.MS
  • Mapcode (Global): VHDWT.7KX0
  • Open Location Code: 9C3XF26P+8G
  • Maidenhead Locator System: IO91ml40
  • Environment Agency Location ID: 2201TH
  • Environment Agency Gauge ID: 2201TH-level-downstage-i-15_min-mASD
  • River Levels Online ID: 7111
  • Water Information System ID: 2201TH
  • Operational Area: South Chilterns
  • Catchment Area: Thames and South Chilterns
  • UK Hydrometric Area: Thames
  • Environment Agency Region: Thames
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 33.263m 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 River Thames at Caversham Lock (Downstream) is between 1.95m and 2.75m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Thames at Caversham Lock (Downstream) over the past 12 months has been between 1.73m and 2.67m. It has been between these levels for at least 151 days in the past year.

The highest level ever recorded at the River Thames at Caversham Lock (Downstream) is 3.76m, reached on Saturday 4th January 2003 at 8:15pm.

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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