River, surface water, groundwater: what your flood-risk result means
Checked 23 Oct 2026
What each source of flooding on the official maps means for a home, and why surface water catches people out.
Rivers and the sea
Editor: write this section from the sources in the front matter (brief section seven).
Surface water
Editor: write this section from the sources in the front matter (brief section seven).
Groundwater
Editor: write this section from the sources in the front matter (brief section seven).
Reservoirs
Editor: write this section from the sources in the front matter (brief section seven).
Sources
- Check your long term flood risk (England) (GOV.UK), checked 23 Oct 2026
- Properties in England at risk of surface water flooding (NaFRA2) (Environment Agency), checked 23 Oct 2026