This flood related impact (i.e a specific part of a road flooding) dataset was made available for the ODI Impact Hack 16/17July 2019. It is subject to change as it is work in progress.
The Environment Agency aims to make this data open in due course as a valuable asset alongside flood warning and river level information.
This data will shortly be released into the Flood Information Service (Alpha). If you wish to have access to that service please email: firstname.lastname@example.org