River Levels
River Levels

River Graveney at Longley Road

Current River Level


At 6:00pm, Friday 9th June BST
(5:00pm, Friday 9th June GMT)

Within the usual range for this location

Steady, no change from previous measurement at 5:45pm, Friday 9th June BST

View downstream gauge levels

Flood Warning Areas Covering Here

River Graveney at Tooting and Colliers Wood

No current or recent warnings.

River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton

No current or recent warnings.

Groundwater flooding in South East London

No current or recent warnings.

Other Nearby Flood Warning Areas

River Wandle at Wimbledon

No current or recent warnings.

River Wandle at Morden

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: Longley Road
  • Watercourse: River Graveney
  • Nearest Town/Village: Merton
  • Local Authority: Merton
  • Ceremonial County: Greater London
  • Coordinates: 51°25'19"N 0°10'24"W (51.421965,-0.173411)
  • OS Grid: TQ271708 (527100,170800)
  • Mapcode (Local): GBR D9.2ZK
  • Mapcode (Global): VHGRB.YJ58
  • Open Location Code: 9C3XCRCG+QJ
  • Maidenhead Locator System: IO91vk91
  • Environment Agency Location ID: 4189TH
  • Environment Agency Gauge ID: 4189TH-level-stage-i-15_min-mASD
  • Operational Area: Wandle
  • Catchment Area: London
  • UK Hydrometric Area: Thames
  • Environment Agency Region: Thames
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 12.23m 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 Graveney at Longley Road is between 0.05m and 2.75m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Graveney at Longley Road over the past 12 months has been between 0.03m and 0.45m. It has been between these levels for at least 154 days in the past year.

The highest level ever recorded at the River Graveney at Longley Road is 2.87m, reached on Thursday 19th August 2004 at 3:45am.

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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