River Levels
River Levels

River Colne at Iver, Clisbys Bridge

Current River Level

0.730m

At 11:00am, Tuesday 19th March GMT

Within the usual range for this location

Steady, no change from previous measurement at 10:45am, Tuesday 19th March GMT

Flood Warning Areas Covering Here

River Colne at Willowbank

No current or recent warnings.

Lower River Colne and Frays River

Flood Alert

Colne Brook at Iver and Colnbrook

Flood Alert

Other Nearby Flood Warning Areas

River Pinn at Yiewsley

No current or recent warnings.

River Pinn at Uxbridge

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: Iver, Clisbys Bridge
  • Watercourse: River Colne, Hertfordshire
  • Nearest Town/Village: Cowley
  • Local Authority: Hillingdon
  • Ceremonial County: Greater London
  • Coordinates: 51°31'45"N 0°29'19"W (51.529235,-0.488741)
  • OS Grid: TQ0493082230 (504930,182230)
  • Mapcode (Local): GBR 15.7H4
  • Mapcode (Global): VHFT4.GTZK
  • Open Location Code: 9C3XGGH6+MG
  • Maidenhead Locator System: IO91sm17
  • Environment Agency Location ID: 2882TH
  • Environment Agency Gauge ID: 2882TH-level-stage-i-15_min-mASD
  • Operational Area: Colne
  • Catchment Area: Colne
  • UK Hydrometric Area: Thames
  • Environment Agency Region: Thames
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 27m 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 Colne at Iver, Clisbys Bridge is between 0.27m and 0.80m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Colne at Iver, Clisbys Bridge over the past 12 months has been between 0.36m and 0.88m. It has been between these levels for at least 150 days in the past year.

The highest level ever recorded at the River Colne at Iver, Clisbys Bridge is 1.40m, reached on Friday 3rd January 2003 at 12:45pm.

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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