River Levels
River Levels

Mimmshall Brook Monitoring Station

Current River Level

0.390m

At 8:15pm, Thursday 21st November GMT

Within the usual range for this location

Steady, no change from previous measurement at 8:00pm, Thursday 21st November GMT

Flood Warning Areas Covering Here

Mimmshall Brook at Warrengate Road

No current or recent warnings.

Mimmshall Brook

No current or recent warnings.

Other Nearby Flood Warning Areas

River Colne at Colney Heath

No current or recent warnings.

Upper River Colne and Radlett Brook

No current or recent warnings.

River Colne at London Colney

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: Mimmshall Brook
  • Watercourse: Mimmshall Brook
  • Nearest Town/Village: South Mimms
  • Local Authority: Hertsmere
  • Ceremonial County: Hertfordshire
  • Coordinates: 51°42'24"N 0°13'4"W (51.706896,-0.217824)
  • OS Grid: TL2324002410 (523240,202410)
  • Mapcode (Local): GBR JB5.ZPK
  • Mapcode (Global): VHGPZ.5CPB
  • Open Location Code: 9C3XPQ4J+QV
  • Maidenhead Locator System: IO91vq39
  • Environment Agency Location ID: 2809TH
  • Environment Agency Gauge ID: 2809TH-level-stage-i-15_min-mASD
  • River Levels Online ID: 7176
  • Water Information System ID: 2809TH
  • Operational Area: Colne
  • Catchment Area: Colne
  • UK Hydrometric Area: Thames
  • Environment Agency Region: Thames
  • Datum Type: Above Stage Datum (ASD)
  • Stage Datum: 76.8m 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 Mimmshall Brook Monitoring Station is between 0.15m and 1.80m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the Mimmshall Brook Monitoring Station over the past 12 months has been between 0.25m and 0.57m. It has been between these levels for at least 151 days in the past year.

The highest level ever recorded at the Mimmshall Brook Monitoring Station is 1.80m, reached on Friday 7th February 2014 at 7:15am.

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

comments powered by Disqus

RiverLevels.uk is an independent website. It is not associated with the Environment Agency or any other supplier of river level information. All data used on this site is supplied under licence. For queries about the data, please contact the underlying supplier.

RiverLevels.uk is a Good Stuff website.