Flood warnings and river level monitoring stations within 25km of Brighton
25km
Brighton, Lewes, Newhaven, Shoreham
Brighton faces both coastal flood risk (storm surges and high tides) and river flood risk from the River Ouse and its tributaries — particularly around Lewes, which experienced severe flooding in October 2000.
The Environment Agency operates monitoring stations along rivers and the coast within 25km of Brighton. Water levels are measured in metres above ordnance datum (mAOD) and updated every 15 minutes.
Flood warnings are issued in three stages by the Environment Agency. If a warning is issued for your area, follow the advice given and monitor local conditions. Sign up for free flood warnings at gov.uk.
Severe flooding — danger to life. Issued for the most serious situations
Flooding is expected — act now. Move valuables upstairs, prepare to evacuate if advised
Flooding is possible — be prepared. Monitor levels and plan your response
Metres Above Ordnance Datum — the height measurement used for water levels relative to mean sea level
The area of land that drains into a particular river — determines how rainfall translates to river levels
Flood monitoring data is provided by the Environment Agency Real Time Flood Monitoring API. Water levels are updated every 15 minutes. Flood warnings are issued by the Environment Agency for England.