About Flooding
Floods are usually caused by heavy or prolonged rainfall but can also occur due to landslides blocking river channels, failure of dams or hydraulic structures, high sea levels, or coastal innundation. They are New Zealand’s number one hazard in terms of frequency, losses and declared civil defence emergencies. Flood events are expected to increase in frequency and intensity due to climate change.
The Bay of Plenty is particularly susceptible to flooding due to its eight major river catchments (Wairoa, Kaituna, Tarawera, Rangitāiki, Whakatāne, Waioweka, Mōtū and Raukokore), low-lying areas, high groundwater levels, and urban development. These factors combined increase the region’s exposure to flood risk.
Pro tip!
Are you prepared for flooding?
Check your flood risk. Many areas in the Bay of Plenty region are susceptible to flooding. You can see if you live in a known flood prone area by visiting NIWA’s map of flood hazard across Aotearoa.
Prepare your property. Severe weather events usually provide some time for warning and for you to take some preparedness actions. Regularly clear drains, gutters, and downspouts to ensure they work properly during heavy rain. If flooding is expected, move valuables/furniture as high above the floor as possible.
Look at the latest weather forecast. Weather conditions can change rapidly so it’s always good to stay informed about the latest forecast from MetService, New Zealand’s National Weather Authority.
Check road conditions before travelling. Waka Kotahi, the New Zealand Transport Agency (NZTA) provides real-time state highway updates on their website journey planner. Local councils will provide information on the status of local roads via their official channels (website and/or social media).
Trust your danger sense. Floods and flash floods can happen quickly. Know the natural warning signs - if you see rising water, do not wait for official warnings. Head for higher ground and stay away from floodwater.
GTFO (Get the Flood Out). Never try to walk, swim, drive through or play in floodwater.
Evacuate if you feel unsafe. Don’t wait for official warnings. If you see rising water, act quickly and evacuate to higher ground. Don’t take any changes.
Treat all floodwater as contaminated. Floodwater may contain sewage and other hazardous materials which can make you sick.
Act with extreme caution around floodwaters. Floodwater is dangerous, and may contain debris, and other hazardous material. Treat all floodwater as contaminated. Never walk, drive, or play in floodwater. Te Whatu Ora/Health New Zealand or Emergency Management may implement boil water notices or other instructions. Stay informed and follow the official advice.
Take care while travelling. Drive to the conditions as roads may be slippery or damaged.
Watch out for landslides/slips. After heavy rain and flooding, slips can still happen. If you suspect one is about to occur, get out of its path immediately. Click here to learn more about the natural warning signs.
Wait for the all-clear if you have evacuated. Do not return to your property until officials have given the all-clear to say it’s safe.