Environmental open-data applications and datasets

Under its Open Data Strategy Defra and its agencies are increasing the range of the data that they provide. All our data can be found in the data.gov.uk catalogue, but here we highlight other data portals, and services and applications that are built on open environmental data.

Please note that the following services will be offline between 18:00 Friday 18th August to 09:00 Monday 21st August for an infrastructure upgrade: Spatial Data Catalogue, Partner Data Catalogue, Survey Data Catalogue, RoFSW Portal, and WMS/WFS services.


Bathing Water Explorer

Small screenshot of BWQ explorer app

View water quality at designated bathing water sites

Catchment Data Explorer

Small screenshot of catchment data explorer app

Explore and download information about the water environment

Bathing Water Widgets

Small screenshot of bathing water widgets

Web widgets that you can use to embed up-to-date bathing water quality information on your website

Flood Warning Widgets

Small screenshot of flood warning widgets

Web widgets that you can use to embed live flood warnings on your web site


Spatial Data Catalogue

Freely available datasets (including Web Map/Feature Services) from the Environment Agency and other organisations in the Defra Group

Water Quality Archive

Provides data on water quality measurements carried out by the Environment Agency

Survey Data Catalogue

Access to Lidar and aerial photography data

Partner Data Catalogue

Access to datasets for use by our contractors and project partners

RoFSW Portal

Access to Risk of Flooding from Surface Water data.


A hub for accessing environmental data and information for Wales


Environment Registry

A pilot service to provide management and public access to codes and codelists used in the Defra Group

Location Registry

A pilot service to provide management and public access to codes and codelists used in meeting the INSPIRE directive

Bathing Water APIs

Access to bathing water quality information via an Application Programming Interface

Flood Data APIs

Access to near real-time flood warning, alert, river level and rainfall data via an API.

Flood Information Service

Real-time flood warnings and river levels

Flood Warning Feeds

RSS feeds showing the number or national or regional flood warnings in force. Please note that this service is currently unavailable.

Electronic Public Registers

Information on registrations and permits for activities that have the potential to pollute the environment. This is available via searchable web forms and APIs