How many people died in the St Julian flood?

Published estimates put the death toll of the St Julian flood (23 February 1164) at 20,000.

When did the St Julian flood happen?

It occurred on 23 February 1164 in Netherlands.

Flood 1164 Historic

St Julian flood

23 February 1164 Netherlands · Europe 20,000 deaths

St Julian flood occurred on 23 February 1164 in Netherlands. Recorded deaths: 20,000.

Detailed accounts of this event are still being compiled. If you have verified information or a good source, we would welcome it through the contact page.

Why this event still matters

Historical incidents shape the rules that protect people today — building codes, evacuation policy, warning systems and inspection regimes almost always trace back to a specific disaster. Studying St Julian flood alongside current events is how preparedness improves.

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