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Floods

Breadcrumbs

Home / Natural hazards / Floods

Flooding is the most common natural hazard in Canterbury. Three main types of flooding affect our low-lying region - river flooding, local runoff flooding and coastal overtopping.

Canterbury floods May-June 2021

View current flood response works, along with the latest updates on the situation around the region.

Causes of flooding

Flooding is the most common natural hazard in Canterbury. What causes it and how do most floods originate?

Flood probabilities

If one area experiences a 1-in-100 year flood, why can it happen again the next year?
The mysteries of probabilities explained.

Floodplain management

Find out how floodplain management in Canterbury has evolved and what we are doing to reduce the cost of future flood events.

Reports and investigations

Floodplain strategies, technical investigations, modelling and historic flood reports.

Natural hazards

Secondary Navigation

  • Earthquakes
  • Floods
    • Causes of flooding
    • Flood probabilities
    • Floodplain management
    • Reports and investigations
    • Canterbury floods May-June 2021
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Rainfall Data
River Flow Data

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New Zealand Government.New Zealand Government website
Environment Canterbury © 2023
Retrieved: 8:54pm, Tue 28 Mar 2023
https://www.ecan.govt.nz/your-region/your-environment/natural-hazards/floods/