Mimmshall Brook at North Mymms

Current River Level: 0.194m, falling

Within the usual range for this location

Current level recorded at 12:00pm, Thursday 30th March GMT
(1:00pm, Thursday 30th March BST)

Change from previous measurement: -0.003m


The normal level of the Mimmshall Brook at North Mymms in average weather conditions is between 0.21m and 0.37m. It has been between these levels for at least 267 days in the past year.

The usual range of the Mimmshall Brook at North Mymms in more extreme weather conditions is between 0.05m and 1.50m. It has been between these levels for 90% of the time since monitoring began.

The most recent high is 2.17m, reached on Friday 7th February 2014 at 8:30am.

The highest level ever recorded at the Mimmshall Brook at North Mymms is 2.35m, recorded on Tuesday 10th February 2009 at 2:30am.

  • Monitoring Station: North Mymms
  • Watercourse: Mimmshall Brook
  • Catchment Area: Colne (Upper)
  • Region: Thames
  • Nearest Town/Village: North Mymms
  • Local Authority: Welwyn Hatfield Borough Council
  • County: Hertfordshire

Nearby Monitoring Locations

Nearby Flood Warning Locations

Mimmshall Brook at Warrengate Road

No current or recent warnings.

Mimmshall Brook
No Warning

Recent warnings no longer in force.

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

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