A flood risk assessment is required if your development meets the following criteria:
- is a size of one hectare or over in flood zone 1
- is within flood zone 1 which has critical drainage problems as notified by the Environment Agency (none currently notified in North Somerset)
- is in flood zone 2 or 3, including minor development and change of use.
- Please note that flood zones are identified by either the Environment Agency or our Strategic Flood Risk Assessment. If only one shows a site as being within flood zone 2 or 3, a Flood Risk Assessment is still required.
- could be affected by sources of flooding other than rivers and the sea (for example surface water, reservoirs, groundwater), where its development would introduce a more vulnerable use
- where there is an increased risk of flooding, from any source, in the future (as identified within the strategic flood risk assessment).
Use our planning map to find flood zones near you.