Open Flood Risk by Postcode

Description

Open Flood Risk by Postcode combines the Environment Agency's Risk of Flooding from Rivers and Sea with English postcodes from Open Postcode Geo. Each postcode is supplemented with the information from the flood risk area in which it is located. Postcodes are treated as a single point in space, allowing for the postcode to be looked up and the flood risk determined for that point. Note the value of SUITABILITY for a given area for how suitable the risk level is for a given purpose.

Important: We have taken a single point within the postcode and identified the flood risk area which that point falls within. There maybe other points within the postcode which fall into a different area, and hence have a different risk level.

Licence

Free to use for any purpose - attribution required.

Derived from Risk of Flooding from Rivers and Sea. Attribution required: Contains Environment Agency data licensed under the Open Government Licence v3.0.
Derived from Open Postcode Geo which requires attribution, see Open Postcode Geo for the required attribution statements.

Download

Filename: open_flood_risk_by_postcode.csv.zip

Regional Extracts

Extracts from the current version are available for the below regions:

If you would like a regional extract please email us.

Archived extracts from the 2017 version are available for the below regions:

Version

March 2020

Fields

Field	Possible Values	Comments
postcode	[outcode][space][incode]	Standard UK postcode.
FID	int NULL	The Environment Agency's ID for this area.
PROB_4BAND	High Medium Low Very Low None	Likelihood of flooding. See descriptions below.
SUITABILITY	National to County County to Town Town to Street Street to Parcels of land Property (inc. internal) NULL	Scale at which it is suitable to use the likelihood information. See descriptions below.
PUB_DATE	YYYY-MM-DD NULL	Date (financial quarter) of publication
RISK_FOR_INSURANCE_SOP	NULL	This field is no longer supplied by the Environment Agency. The value for all postcodes will therefore be NULL. The most recent release with RISK_FOR_INSURANCE_SOP was February 2017.
easting	int	Along with northing defines the point within the postcode used to match a flood risk area.
northing	int	Along with easting defines the point within the postcode used to match a flood risk area.
latitude	decimal	Along with longitude defines the point within the postcode used to match a flood risk area.
longitude	decimal	Along with latitude defines the point within the postcode used to match a flood risk area.

Description of PROB_4BAND values

PROB_4BAND	Description
High	Each year, there is a chance of flooding of greater than 1 in 30 (3.3%).
Medium	Each year, there is a chance of flooding of between 1 in 30 (3.3%) and 1 in 100 (1%).
Low	Each year, there is a chance of flooding of between 1 in 100 (1%) and 1 in 1000 (0.1%).
Very Low	Each year, there is a chance of flooding of less than 1 in 1000 (0.1%).
None	This value is added by GetTheData to indicate a postcode which is not in a flood risk area.

Source: Risk of Flooding from Rivers and Sea - Product Description.

Description of SUITABILITY values

SUITABILITY	Description
National to County	Suitable for identifying which parts of countries or counties are at risk, or which countries or counties have the most risk.
County to Town	Suitable for identifying which parts of counties or towns are at risk, or which counties or towns have the most risk.
Town to Street	Suitable for identifying which parts of towns or streets are at risk, or which towns or streets have the most risk.
Street to Parcels of land	Suitable for identifying which parts of streets or parcels of land are at risk, or which streets or parcels of land have the most risk.
Property (inc. internal)	Suitable for identifying which parts of a property are at risk (including internal / external distinction), or which properties have the most risk.