Flood Warning Gauge

The flood warning gauge at Tattenhall is now live on the 'Check for Flooding Service' at Mill Brook level in Tattenhall High Street -- GOV.UK act enhanced Detection and forecasting is triggered when the river level reaches 1.1m. This triggers the duty team to forecast whether the river level will carry on rising. A Flood Warning will be issued when it is anticipated that flooding to properties from the river is expected. At Tattenhall this correlates to a level of 1.6 m, so a Flood Warning will be issued when the water level is forecast to reach 1.6 m. It is aimed to do this with a lead time of 1 hour, although this isn't always possible as you will have seen with recent storm events, water levels can rise very rapidly.

Residents are encouraged to sign up to flood warnings, which they can do so at :
Sign up for flood warnings here

On receipt of a flood warning, residents should take action. Help and advice on how to prepare is available at:
What to do before or during a flood are here

Our team can provide more details and are available at:
FloodResilienceGMMC@environment-agency.gov.uk

The gauge has been live on our Check for Flooding Service since 17th September 2025.

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