River Allen at Idless Dam


Current River Level: 0.106m, rising

Within the usual range for this location

Current level recorded at 4:00am, Wednesday 25th August GMT

Change from previous measurement: 0.106m

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.

View downstream gauge levels

The usual range of the River Allen at Idless Dam is between 0.05m and 1.10m. It has been between these levels for 90% of the time since monitoring began.

The highest level ever recorded at the River Allen at Idless Dam is 1.25m, reached on Thursday 7th December 2000 at 8:00pm.

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.

  • Monitoring Station: Idless Dam
  • Watercourse: River Allen (downstream)
  • Nearest Town/Village: St Clement
  • Local Authority: Cornwall
  • Ceremonial County: Cornwall
  • Coordinates: 50°17'5"N 5°3'26"W (50.284843,-5.057324)
  • OS Grid: SW822472 (182296,47237)
  • Mapcode (Local): GBR ZF.W0QW
  • Mapcode (Global): FRA 0898.TV1
  • Open Location Code: 9C2P7WMV+W3
  • Maidenhead Locator System: IO70lg38
  • Environment Agency Location ID: 48115
  • Environment Agency Gauge ID: 48115-level-stage-i-15_min-m
  • Operational Area: Fal
  • Catchment Area: West Cornwall and the Fal
  • UK Hydrometric Area: Fal Group
  • Environment Agency Region: South West
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 1.25m AOD

Nearby Monitoring Locations

Nearby Flood Warning Locations

River Allen (Kenwyn) from Idless Dam to Truro
River Allen (Kenwyn) from Idless Dam to Truro including Scawswater Mill, Copes Gardens, St Clements Street, Union Place, Wilkes Walk and the Shoppers Car Park

No current or recent warnings.

River Kenwyn from New Mill Dam to Truro
River Kenwyn from New Mill Dam to Truro including Coosebean Mill, St Georges Villas and St Georges Road

No current or recent warnings.

River Kenwyn at Truro
River Kenwyn at Truro including River Street, Victoria Square and Boscawen Street

No current or recent warnings.

South Cornwall coast at Truro
South Cornwall coast at Truro including Garras Wharf, Newham Road, Lemon Quay, Malpas Road and other Truro Harbourside locations including Boscawen Park

No current or recent warnings.

River Tinney at Calenick
River Tinney at Calenick including Bridge House, Corner House, End Cottage, Barton Croft, the A39 at Arch Hill and Mill Lane

No current or recent warnings.

Long term graphs will work better if you rotate your fondleslab into landscape mode.

Past Week

Long Term

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.

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