Protecting Our Heritage: How Climate Change Poses a Threat to the ‘Birthplace of the Nation’

One of New Zealand’s oldest archaeological treasures, the Wairau Bar, faces a growing threat from rising sea levels. A recent study shows that this significant site, known as Te Pokohiwi o Kupe, is at risk of flooding, raising concerns among local iwi and historians alike.

Te Pokohiwi o Kupe, dating back to at least 1250, is crucial for the Rangitāne iwi and for all of Aotearoa. Corey Hebberd, a descendant of Rangitāne o Wairau and co-author of the study, emphasizes its importance. “This site is where our first settlers landed. It’s not just a local story; it has global significance too,” he explains. The area holds not just artifacts but also ancestral remains, making it a sacred site for the iwi.

The Wairau Bar, located at the mouth of the Wairau River, is particularly vulnerable. It is bordered by the sea on one side and a lagoon on the other. This positioning increases erosion, putting the site at risk. Recent modeling from NIWA suggests that during a 100-year storm event, about 20% of the site could be flooded. However, as sea levels rise—projected to increase by half a meter by the 2050s—this risk could escalate. In fact, by between 2070 and 2130, 75% of the site could be endangered.

Hebberd reflects on the urgency of the situation. “These threats can feel distant, but we’re already seeing impacts. The idea of significant flooding is not far off—it could happen within my lifetime.” This sense of urgency carries a heavy responsibility, as there’s a collective goal to preserve the history and cultural significance of the site.

Recent heavy rain has already caused some damage, highlighting the immediate threats posed by climate change. Each flooding event contributes to further erosion, making it clear that time is of the essence. Hebberd suggests that protecting the site might involve strategies like planting native vegetation to help stabilize the soil and prevent additional erosion.

This situation underscores the need to rethink local and national planning strategies in the face of climate change. Many sites across New Zealand face similar threats from severe weather events. The partnership between Rangitāne and NIWA combines traditional Māori knowledge with modern science, showcasing a holistic approach to environmental stewardship. “Our whānau were involved every step of the way, sharing their experiences and insights,” Hebberd added, highlighting the community’s role in this crucial effort.

As climate change becomes increasingly urgent, the protection of sites like Te Pokohiwi o Kupe is not just about preserving history—it’s about recognizing their significance in our shared narrative and ensuring future generations can connect with their heritage.

For more insights on climate change and its implications, you can check resources from the [National Institute of Water and Atmospheric Research](https://www.niwa.co.nz) and other reliable reports on environmental conservation.

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