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New online maps showing areas at risk from coastal and river flooding have been released by Northland Regional Council.
The updated flood hazard maps identify more than 17,000 more at-risk properties than previous maps, including nearly 3000 in Kaipara district and 99 marae.
Northland Regional Council developed the maps using computer models that took into account historic flood levels, topography, rainfall and river flows.
Climate change working party chair Amy Macdonald said the new maps were one of the cornerstones of developing a more resilient community.
“Climate change impacts likely mean we’ll see flooding events become more frequent and more intense,” she said.
“The new maps are more comprehensive, accurate and cover the whole of the river catchments that were not displayed in the previous flood susceptible maps.
“These new maps allow Council, hapū, iwi and community to better understand risk areas and the potential impact on Northland communities.”
The different flood scenarios modelled and shown on the new maps include one in 10-year, one in 50-year and one in 100-year events.
Northland’s three district councils are also required to use the maps to manage where and how development is allowed.
The maps and more information can be found at www.nrc.govt.nz/floodmaps
