Flooding and flood risk

Brent has two main rivers, the River Brent and the Wealdstone Brook. The areas next to these rivers form part of a natural flood plain.

Out of the estimated 118,500 properties in Brent, approximately 1,390 are potentially at risk of flooding at least once every 100 years, and 2,900 properties are at risk of flooding once every 1,000 years.

Strategic Flood Risk Assessment

The West London Boroughs of Brent, Barnet, Ealing, Harrow, Hillingdon and Hounslow have commissioned a joint Level 1 Strategic Flood Risk Assessment. This takes the form of an interactive webmap and webpage which is designed to provide a common approach and user friendly guidance on flood risk across the study area.

Joint West London Level 1 Strategic Flood Risk Assessment webmap 

Am I in a flood risk area?

To find out which flood zone your property is in, you can visit the Joint West London Level 1 Strategic Flood Risk Assessment webmap and search the flood map using a place name or a postcode.

What is a Flood Risk Assessment?

Certain planning applications must be accompanied by a Flood Risk Assessment (FRA).

A Flood Risk Assessment (FRA) is a report which must accompany certain applications to ensure that the land or property is suitable for the proposed development.

They demonstrate how flooding to and from the development will be managed and mitigated both now and in the future, taking the impacts of climate change into account.

If your application does require a FRA, you may need to contact a consultant to prepare it for you.

Do I need a Flood Risk Assessment?

Planning applications of one hectare or greater within flood zone 1, or applications of any size within flood zones 2 or 3, will need to be accompanied by a FRA.

If your application requires a FRA and you do not submit one, your application will not be validated.

How is the Environment Agency involved?

We consult the Environment Agency (EA) on certain applications within flood zones 2 and 3, as well as any application over 1ha in flood zone 1 and smaller applications in flood zone 1 which are in areas that have critical drainage issues.

Should your application be referable to the EA, we will issue the consultation.

Other Flood Risk Studies and Strategies