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Serious flooding has occurred in most parts of New
Zealand at some time or another, including in Whanganui.
Whanganui has a history of
repeated flooding in low lying areas, particularly adjacent to the Whanganui,
Whangaehu and Mangawhero Rivers and neighbouring streams.
Climate change modelling tells
us that heavier and more frequent downpours will cause localised or large-scale
flooding in this area of the country.
Whanganui residents living or
working near streams or rivers, on river banks or surrounding flats and floodplains
should keep up-to-date about the weather and its effects on river levels.
The June 2015 Whanganui River flood event - Anzac Parade (photo courtesy of Wanganui Chronicle)
The most significant flood event
on record for Whanganui was in June 2015,
when a combination of heavy rain caused simultaneous surface flooding as well
as landslides around the city and in the lower, middle and upper catchments.
This caused the Whanganui and our other rivers to flood.
This event was considered a
Sign up to Horizons’ river warning alert system
Watch Horizons’ webcams (Whanganui River and coast)
Overland Flow Path map – the predicted path stormwater takes
in an unusually large rain event to get to the sea or stormwater network
Flood plain map
People in at-risk areas should have a plan prepared for
evacuating themselves, pets, livestock and important items or goods to a safe
Flooding may also impact our roads, so make sure you have
supplies ready in your car in case you are stranded for some time
You may also be stuck at work, so prepare your workplace emergency plan
How to prepare for an emergency - Get Thru website