River Levels
River Levels

River Tamar at Polson Bridge

Current River Level

0.950m

At 4:00am, Monday 4th March GMT

Within the usual range for this location

Falling, -0.110 from previous measurement at 4:15pm, Sunday 3rd March GMT

Latest Flow

84.10 m3/s

(Daily Average)

Recorded on Friday 1st March

Above normal flow volume

Increase, 44.50 from previous recording on Thursday 29th February

Flood Warning Areas Covering Here

River Tamar from Netherbridge to Greystone Bridge

No current or recent warnings.

Upper River Tamar

Recent warnings or alerts no longer in force

Other Nearby Flood Warning Areas

River Kensey at Newport Industrial Estate

No current or recent warnings.

River Ottery at Yeolmbridge and Ham Mill

No current or recent warnings.

River Kensey from Newmills to St Leonards excluding Newport Industrial Estate

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: Polson Bridge
  • Watercourse: River Tamar
  • Nearest Town/Village: Lawhitton Rural
  • Local Authority: Cornwall
  • Ceremonial County: Cornwall
  • Coordinates: 50°38'24"N 4°19'50"W (50.640271,-4.330759)
  • OS Grid: SX352848 (235290,84880)
  • Mapcode (Local): GBR NM.93D2
  • Mapcode (Global): FRA 17TC.W25
  • Open Location Code: 9C2QJMR9+4M
  • Maidenhead Locator System: IO70up03
  • Environment Agency Location ID: 47115
  • Environment Agency Gauge ID: 47115-level-stage-i-15_min-m
  • Operational Area: Tamar Upper
  • Catchment Area: Tamar
  • UK Hydrometric Area: Tamar Group
  • Environment Agency Region: South West
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 48.1m 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 Tamar at Polson Bridge is between 0.23m and 3.00m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Tamar at Polson Bridge over the past 12 months has been between 0.22m and 3.28m. It has been between these levels for at least 150 days in the past year.

The highest level ever recorded at the River Tamar at Polson Bridge is 5.35m, reached on Sunday 19th December 1999 at 3:15am.

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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