River Levels
River Levels

East Mill Sluice Colchester Monitoring Station

Latest Tidal Level


At 6:45pm, Sunday 21st April BST
(5:45pm, Sunday 21st April GMT)

Within the usual range for this location

Rising, 0.030 from previous measurement at 6:30pm, Sunday 21st April BST

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

Riverside properties on the River Colne in Colchester

No current or recent warnings.

The River Colne from Great Yeldham to Colchester

No current or recent warnings.

Other Nearby Flood Warning Areas

The River Colne, through Colchester

No current or recent warnings.

The tidal River Colne upstream of the Colne Barrier

No current or recent warnings.

The River Stour upstream of Cattawade Barrage to Dedham

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: East Mill Sluice Colchester
  • Watercourse:
  • Nearest Town/Village:
  • Local Authority: Colchester
  • Ceremonial County: Essex
  • Coordinates: 51°53'28"N 0°54'54"E (51.891342,0.915231)
  • OS Grid: TM0069825438 (600698,225438)
  • Mapcode (Local): GBR SN5.B6K
  • Mapcode (Global): VHKFZ.TQ6G
  • Open Location Code: 9F32VWR8+G3
  • Maidenhead Locator System: JO01kv93
  • Environment Agency Location ID: E24093
  • Environment Agency Gauge ID: E24093-level-tidal_level-i-15_min-mAOD
  • Operational Area: Colne Essex
  • Catchment Area: Combined Essex
  • UK Hydrometric Area: Essex Rivers Group
  • Environment Agency Region: Anglian
  • 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 East Mill Sluice Colchester Monitoring Station is between 0.96m and 2.85m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the East Mill Sluice Colchester Monitoring Station over the past 12 months has been between 0.96m and 2.93m. It has been between these levels for at least 151 days in the past year.

Nearby Monitoring Locations

There are no other monitored rivers nearby

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