Latest river level information for:
the Lariggan River at Penzance Alverton

6:16am Tuesday 22 August 2017

Latest level 0.07m

Normal range is 0.05m to 0.30m

Recorded at 7:00am Monday 21 August 2017

River levels at this location in the last 5 days

Flooding is possible over 0.30m

What's the highest recorded level here?

Highest recorded level 0.68m on 21 March 2013

This is the highest water level recorded here since the station was opened.

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DateTime	Value	Error
2017-08-21T06:00Z	0.07	false
2017-08-21T06:00Z	0.07	false
2017-08-21T05:45Z	0.07	false
2017-08-21T05:45Z	0.07	false
2017-08-21T05:30Z	0.07	false
2017-08-21T05:30Z	0.07	false
2017-08-21T05:15Z	0.07	false
2017-08-21T05:15Z	0.07	false
2017-08-21T05:00Z	0.07	false
2017-08-21T05:00Z	0.07	false
2017-08-21T04:45Z	0.08	false
2017-08-21T04:45Z	0.08	false
2017-08-21T04:30Z	0.08	false
2017-08-21T04:30Z	0.08	false
2017-08-21T04:15Z	0.08	false
2017-08-21T04:15Z	0.08	false
2017-08-21T04:00Z	0.08	false
2017-08-21T04:00Z	0.08	false
2017-08-21T03:45Z	0.08	false
2017-08-21T03:45Z	0.08	false
2017-08-21T03:30Z	0.07	false
2017-08-21T03:30Z	0.07	false
2017-08-21T03:15Z	0.08	false
2017-08-21T03:15Z	0.08	false
2017-08-21T03:00Z	0.07	false
2017-08-21T03:00Z	0.07	false
2017-08-21T02:45Z	0.08	false
2017-08-21T02:45Z	0.08	false
2017-08-21T02:30Z	0.08	false
2017-08-21T02:30Z	0.08	false
2017-08-21T02:15Z	0.08	false
2017-08-21T02:15Z	0.08	false
2017-08-21T02:00Z	0.08	false
2017-08-21T02:00Z	0.08	false
2017-08-21T01:45Z	0.08	false
2017-08-21T01:45Z	0.08	false
2017-08-21T01:30Z	0.08	false
2017-08-21T01:30Z	0.08	false
2017-08-21T01:15Z	0.08	false
2017-08-21T01:15Z	0.08	false
2017-08-21T01:00Z	0.08	false
2017-08-21T01:00Z	0.08	false
2017-08-21T00:45Z	0.07	false
2017-08-21T00:45Z	0.07	false
2017-08-21T00:30Z	0.07	false
2017-08-21T00:30Z	0.07	false
2017-08-21T00:15Z	0.07	false
2017-08-21T00:15Z	0.07	false
2017-08-21T00:00Z	0.07	false
2017-08-21T00:00Z	0.07	false
2017-08-20T23:45Z	0.08	false
2017-08-20T23:45Z	0.08	false
2017-08-20T23:30Z	0.08	false
2017-08-20T23:30Z	0.08	false
2017-08-20T23:15Z	0.07	false
2017-08-20T23:15Z	0.07	false
2017-08-20T23:00Z	0.08	false
2017-08-20T23:00Z	0.08	false
2017-08-20T22:45Z	0.08	false
2017-08-20T22:45Z	0.08	false
2017-08-20T22:30Z	0.07	false
2017-08-20T22:30Z	0.07	false
2017-08-20T22:15Z	0.08	false
2017-08-20T22:15Z	0.08	false
2017-08-20T22:00Z	0.08	false
2017-08-20T22:00Z	0.08	false
2017-08-20T21:45Z	0.08	false
2017-08-20T21:45Z	0.08	false
2017-08-20T21:30Z	0.08	false
2017-08-20T21:30Z	0.08	false
2017-08-20T21:15Z	0.08	false
2017-08-20T21:15Z	0.08	false
2017-08-20T21:00Z	0.08	false
2017-08-20T21:00Z	0.08	false
2017-08-20T20:45Z	0.08	false
2017-08-20T20:45Z	0.08	false
2017-08-20T20:30Z	0.07	false
2017-08-20T20:30Z	0.07	false
2017-08-20T20:15Z	0.08	false
2017-08-20T20:15Z	0.08	false
2017-08-20T20:00Z	0.08	false
2017-08-20T20:00Z	0.08	false
2017-08-20T19:45Z	0.08	false
2017-08-20T19:45Z	0.08	false
2017-08-20T19:30Z	0.08	false
2017-08-20T19:30Z	0.08	false
2017-08-20T19:15Z	0.08	false
2017-08-20T19:15Z	0.08	false
2017-08-20T19:00Z	0.08	false
2017-08-20T19:00Z	0.08	false
2017-08-20T18:45Z	0.08	false
2017-08-20T18:45Z	0.08	false
2017-08-20T18:30Z	0.08	false
2017-08-20T18:30Z	0.08	false
2017-08-20T18:15Z	0.08	false
2017-08-20T18:15Z	0.08	false
2017-08-20T18:00Z	0.08	false
2017-08-20T18:00Z	0.08	false
2017-08-20T17:45Z	0.08	false
2017-08-20T17:45Z	0.08	false
2017-08-20T17:30Z	0.08	false
2017-08-20T17:30Z	0.08	false
2017-08-20T17:15Z	0.07	false
2017-08-20T17:15Z	0.07	false
2017-08-20T17:00Z	0.08	false
2017-08-20T17:00Z	0.08	false
2017-08-20T16:45Z	0.08	false
2017-08-20T16:45Z	0.08	false
2017-08-20T16:30Z	0.08	false
2017-08-20T16:30Z	0.08	false
2017-08-20T16:15Z	0.08	false
2017-08-20T16:15Z	0.08	false
2017-08-20T16:00Z	0.08	false
2017-08-20T16:00Z	0.08	false
2017-08-20T15:45Z	0.08	false
2017-08-20T15:45Z	0.08	false
2017-08-20T15:30Z	0.08	false
2017-08-20T15:30Z	0.08	false
2017-08-20T15:15Z	0.08	false
2017-08-20T15:15Z	0.08	false
2017-08-20T15:00Z	0.08	false
2017-08-20T15:00Z	0.08	false
2017-08-20T14:45Z	0.08	false
2017-08-20T14:45Z	0.08	false
2017-08-20T14:30Z	0.08	false
2017-08-20T14:30Z	0.08	false
2017-08-20T14:15Z	0.08	false
2017-08-20T14:15Z	0.08	false
2017-08-20T14:00Z	0.08	false
2017-08-20T14:00Z	0.08	false
2017-08-20T13:45Z	0.08	false
2017-08-20T13:45Z	0.08	false
2017-08-20T13:30Z	0.08	false
2017-08-20T13:30Z	0.08	false
2017-08-20T13:15Z	0.08	false
2017-08-20T13:15Z	0.08	false
2017-08-20T13:00Z	0.08	false
2017-08-20T13:00Z	0.08	false
2017-08-20T12:45Z	0.08	false
2017-08-20T12:45Z	0.08	false
2017-08-20T12:30Z	0.08	false
2017-08-20T12:30Z	0.08	false
2017-08-20T12:15Z	0.08	false
2017-08-20T12:15Z	0.08	false
2017-08-20T12:00Z	0.08	false
2017-08-20T12:00Z	0.08	false
2017-08-20T11:45Z	0.08	false
2017-08-20T11:45Z	0.08	false
2017-08-20T11:30Z	0.08	false
2017-08-20T11:30Z	0.08	false
2017-08-20T11:15Z	0.08	false
2017-08-20T11:15Z	0.08	false
2017-08-20T11:00Z	0.08	false
2017-08-20T11:00Z	0.08	false
2017-08-20T10:45Z	0.08	false
2017-08-20T10:45Z	0.08	false
2017-08-20T10:30Z	0.08	false
2017-08-20T10:30Z	0.08	false
2017-08-20T10:15Z	0.08	false
2017-08-20T10:15Z	0.08	false
2017-08-20T10:00Z	0.08	false
2017-08-20T10:00Z	0.08	false
2017-08-20T09:45Z	0.08	false
2017-08-20T09:45Z	0.08	false
2017-08-20T09:30Z	0.07	false
2017-08-20T09:30Z	0.07	false
2017-08-20T09:15Z	0.07	false
2017-08-20T09:15Z	0.07	false
2017-08-20T09:00Z	0.07	false
2017-08-20T09:00Z	0.07	false
2017-08-20T08:45Z	0.07	false
2017-08-20T08:45Z	0.07	false
2017-08-20T08:30Z	0.07	false
2017-08-20T08:30Z	0.07	false
2017-08-20T08:15Z	0.07	false
2017-08-20T08:15Z	0.07	false
2017-08-20T08:00Z	0.07	false
2017-08-20T08:00Z	0.07	false
2017-08-20T07:45Z	0.07	false
2017-08-20T07:45Z	0.07	false
2017-08-20T07:30Z	0.07	false
2017-08-20T07:30Z	0.07	false
2017-08-20T07:15Z	0.07	false
2017-08-20T07:15Z	0.07	false
2017-08-20T07:00Z	0.07	false
2017-08-20T07:00Z	0.07	false
2017-08-20T06:45Z	0.07	false
2017-08-20T06:45Z	0.07	false
2017-08-20T06:30Z	0.07	false
2017-08-20T06:30Z	0.07	false
2017-08-20T06:15Z	0.07	false
2017-08-20T06:15Z	0.07	false
2017-08-20T06:00Z	0.07	false
2017-08-20T05:45Z	0.07	false
2017-08-20T05:30Z	0.07	false
2017-08-20T05:15Z	0.07	false
2017-08-20T05:00Z	0.07	false
2017-08-20T04:45Z	0.07	false
2017-08-20T04:30Z	0.07	false
2017-08-20T04:15Z	0.07	false
2017-08-20T04:00Z	0.07	false
2017-08-20T03:45Z	0.07	false
2017-08-20T03:30Z	0.07	false
2017-08-20T03:15Z	0.07	false
2017-08-20T03:00Z	0.07	false
2017-08-20T02:45Z	0.07	false
2017-08-20T02:30Z	0.07	false
2017-08-20T02:15Z	0.07	false
2017-08-20T02:00Z	0.07	false
2017-08-20T01:45Z	0.07	false
2017-08-20T01:30Z	0.07	false
2017-08-20T01:15Z	0.07	false
2017-08-20T01:00Z	0.07	false
2017-08-20T00:45Z	0.07	false
2017-08-20T00:30Z	0.07	false
2017-08-20T00:15Z	0.07	false
2017-08-20T00:00Z	0.07	false
2017-08-19T23:45Z	0.07	false
2017-08-19T23:30Z	0.07	false
2017-08-19T23:15Z	0.07	false
2017-08-19T23:00Z	0.07	false
2017-08-19T22:45Z	0.07	false
2017-08-19T22:30Z	0.07	false
2017-08-19T22:15Z	0.07	false
2017-08-19T22:00Z	0.07	false
2017-08-19T21:45Z	0.07	false
2017-08-19T21:30Z	0.07	false
2017-08-19T21:15Z	0.07	false
2017-08-19T21:00Z	0.07	false
2017-08-19T20:45Z	0.07	false
2017-08-19T20:30Z	0.07	false
2017-08-19T20:15Z	0.07	false
2017-08-19T20:00Z	0.07	false
2017-08-19T19:45Z	0.07	false
2017-08-19T19:30Z	0.07	false
2017-08-19T19:15Z	0.07	false
2017-08-19T19:00Z	0.07	false
2017-08-19T18:45Z	0.07	false
2017-08-19T18:30Z	0.07	false
2017-08-19T18:15Z	0.07	false
2017-08-19T18:00Z	0.07	false
2017-08-19T17:45Z	0.07	false
2017-08-19T17:30Z	0.07	false
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2017-08-19T17:00Z	0.07	false
2017-08-19T16:45Z	0.07	false
2017-08-19T16:30Z	0.07	false
2017-08-19T16:15Z	0.07	false
2017-08-19T16:00Z	0.07	false
2017-08-19T15:45Z	0.07	false
2017-08-19T15:30Z	0.07	false
2017-08-19T15:15Z	0.07	false
2017-08-19T15:00Z	0.07	false
2017-08-19T14:45Z	0.07	false
2017-08-19T14:30Z	0.07	false
2017-08-19T14:15Z	0.07	false
2017-08-19T14:00Z	0.07	false
2017-08-19T13:45Z	0.07	false
2017-08-19T13:30Z	0.07	false
2017-08-19T13:15Z	0.07	false
2017-08-19T13:00Z	0.07	false
2017-08-19T12:45Z	0.07	false
2017-08-19T12:30Z	0.07	false
2017-08-19T12:15Z	0.07	false
2017-08-19T12:00Z	0.07	false
2017-08-19T11:45Z	0.07	false
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2017-08-19T11:15Z	0.07	false
2017-08-19T11:00Z	0.07	false
2017-08-19T10:45Z	0.07	false
2017-08-19T10:30Z	0.07	false
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2017-08-19T09:00Z	0.07	false
2017-08-19T08:45Z	0.07	false
2017-08-19T08:30Z	0.07	false
2017-08-19T08:15Z	0.07	false
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2017-08-19T07:45Z	0.07	false
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2017-08-19T07:00Z	0.07	false
2017-08-19T06:45Z	0.07	false
2017-08-19T06:30Z	0.07	false
2017-08-19T06:15Z	0.07	false
2017-08-19T06:00Z	0.07	false
2017-08-19T05:45Z	0.07	false
2017-08-19T05:30Z	0.07	false
2017-08-19T05:15Z	0.07	false
2017-08-19T05:00Z	0.07	false
2017-08-19T04:45Z	0.07	false
2017-08-19T04:30Z	0.07	false
2017-08-19T04:15Z	0.07	false
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2017-08-19T02:45Z	0.07	false
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2017-08-18T21:45Z	0.07	false
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2017-08-18T21:15Z	0.07	false
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Other measuring stations in this area

• Monitoring station
• Monitoring station with flood risk
• Monitoring station unavailable
• Location of the place you entered

Zoom into the map and select a river or sea level station to see more information.

Key information

• Station name: Penzance Alverton
• Station ID: 3390
• River name: Lariggan River
• Typical range: 0.05m to 0.30m
• Highest level on record: 0.68m on 21 March 2013
• Site datum: 0.00mAOD (what does this mean?)

How are river levels measured?

The Environment agency uses a network of monitoring stations across the country. Each one has its own datum - a height in metres fixed relative to mean sea level. This height is expressed as metres above ordnance datum (mAOD). The river levels we provide for each monitoring station are all relative to its site datum.

If we didn't do this, we'd show some very high measurements, which could cause confusion. By using a local site datum, the river levels are easier to understand, especially by users familiar with the data from a particular monitoring station.

A river's height above ordnance datum can be seen by adding the site datum to the river level.

How often are river and sea levels measured?

The data we collect is fed into this service once or twice a day under typical conditions. We increase this frequency whenever there's a greater risk of flooding.

How might river levels affect flood risk?

Typical range

This is the usual range of river levels at this station, based on historical data.

Above typical

This means that flooding is possible because river levels at this station are currently higher than usual.
Many factors can influence the possibility of flooding - river levels are only one indicator. Always check if there's a flood warning in place at a particular location.

Below typical

This means that river levels at this station are currently lower than usual.
Drought or water management measures may be in place. Please check for the latest information on water resources and restrictions in your area.

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