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Get flood risk data

How to access flood risk data

We use a range of datasets to produce flood risk results in the Check the long term flood risk for an area in England service.

Technical users can find and download the datasets and put them into their own GIS or internal systems by following the links on this page.

You can also search for the datasets on the Data Services Platform (DSP) .

Once you’ve chosen a dataset you can select an area on the map and download the whole dataset or an area of interest.

Data you can get

You can find and access data on flood risk from:

  • rivers and the sea
  • surface water
  • reservoirs

The datasets are not suitable for identifying if an individual property will flood.

Rivers and the sea data

A series of datasets are available for rivers and the sea taking account of the presence and condition of flood defences. They include predicted extent, displayed as one of four likelihood bandings:

  • high – more than a 3.3% chance of a flood each year
  • medium – between 1% and 3.3% chance of a flood each year
  • low – between 0.1% and 1% chance of a flood each year
  • very low – less than a 0.1% chance of a flood each year

The datasets also present likelihood bandings for depths of:

  • 20cm
  • 30cm
  • 60cm
  • 90cm
  • 120cm

The following dataset shows the chance of flooding from rivers and the sea:

Risk of flooding from rivers and the sea

The following dataset shows climate change scenarios indicating the predicted impact for future risk between 2036 to 2069:

Risk of flooding from rivers and the sea – climate change 1

This dataset shows anticipated changes to:

  • peak river flow
  • sea level rise
  • offshore wind speed and extreme wave height

Risk of flooding from rivers and the sea: summary

These documents provide analysis of the numbers of people and property in areas at risk of flooding from rivers and the sea.

There are two spreadsheets available:

  • number of properties in areas at risk
  • number of people in areas at risk

Risk of flooding from rivers and the sea – key summary information

Risk of flooding from rivers and the sea: postcodes in areas at risk

This dataset contains a summary of properties at risk of flooding from rivers and the sea at a postcode scale.

It includes a breakdown by flood risk likelihood category and property type.

Risk of flooding from rivers and the sea – postcodes in areas at risk

Risk of flooding from rivers and the sea: properties in areas at risk

This dataset contains an assessment of the risk of flooding from rivers and the sea for areas at risk linked to properties in that area.

It can only provide an indication of the likelihood of flooding around the area of the property, not the actual impact on a specific property.

Risk of flooding from rivers and the sea – properties in areas at risk

Surface water data

A series of datasets are available showing overall risk of flooding from surface water. They include predicted extent displayed as one of three likelihood bandings:

  • high – more than a 3.3% chance of a flood each year
  • medium – between 1% and 3.3% chance of a flood each year
  • low – between 0.1% and 1% chance of a flood each year

If an area is not in one of the above bandings, a fourth category of very low is shown on Check your long term flood risk service.

The datasets also present likelihood bandings for depths of:

  • 20cm
  • 30cm
  • 60cm
  • 90cm
  • 120cm

The following dataset shows the overall risk of flooding from surface water:

Risk of flooding from surface water

The following dataset shows climate change scenarios indicating the predicted impact for future risk between 2040 to 2060:

Risk of flooding from surface water – climate change 1

Risk of flooding from surface water: summary

These documents provide analysis of the numbers of people and property in areas at risk of flooding from surface water.

There are three spreadsheets available:

  • number of properties in areas at flood risk from surface water
  • number of people in areas at flood risk from surface water
  • number of ground floor properties in areas at flood risk from surface water

Risk of flooding from surface water – key summary information

Reservoir data

The following datasets show the predicted extent of flooding if reservoirs fail when nearby rivers are:

Groundwater data

We do not have modelled data for groundwater flooding.

We use flood alert data to check the risk of flooding from groundwater.