Floods

Flooding is the most common hazard in New Zealand in terms of frequency, losses and declared emergencies. Floods are usually caused by heavy rain and can cause injury and loss of life, and damage to property, land, and infrastructure.

For more information: ORC Natural Hazards

A combination of climatic and topographical factors means the Otago region can be prone to high rainfall and subsequent flooding.

Flooding can occur when natural and built drainage systems are overloaded, particularly in urban areas, by prolonged heavy rain, coastal inundations, and even tsunami.

Otago has many rivers and streams. The big three rivers (Waitaki, Clutha, and Taieri) have all flooded in the past.

Otago Regional Council (ORC) owns and manages flood protection and drainage assets across Otago to protect our local communities from experiencing the full extent of damaging flood events.

ORC provides flood protection and land drainage to approximately 43,000ha rural and urban land in Otago. Our flood protection assets include over 200km of floodbanks, 12 pumping stations, 55 bridges, culverts and various other assets. ORC own and manage a total of 7 flood protection and/or drainage schemes.

Find out more about flood protection and river management

Things you can do right now to get ready for flooding:

• Check if you are in a flood zone
• Think of a place you could go if you had to evacuate – it could be with family or friends who don’t live in a flood-prone area.
• Regularly clear your gutters and drains, especially during the rainy months.