Engaging to Adapt: Building Climate Change into Decision Making

With 15,000 kilometers (~9,320 miles) of coastline, coastal erosion, coastal inundation and rising groundwater levels are a reality for many coastal communities in New Zealand (NZ). These communities are often also exposed to other inland hazards, including fluvial (river) flooding, pluvial (rainfall) flooding and land instability issues like landslides. Climate change is exacerbating all these hazards, meaning more communities will experience the effects of these hazards in their lifetime.

In NZ, the historic approach to managing the coastline has been reactive. This approach leads to decision-making under pressure focused on how we can restore and protect what was there. Slowly, NZ is moving from a defend-at-all-costs approach to a more holistic strategy of considering the whole coastal system. We're becoming more confident in making decisions under uncertainty, and adaptation planning is slowly becoming the norm. It's a complex and evolving topic.

Uncertainty and change can be scary, especially when that change is outside our control - however, it doesn't need to be. Adaptive planning provides a framework to engage with communities on emerging hazards and increasing risks without knowing all the answers. In NZ, we generally use Dynamic Adaptive Policy Pathways (DAPP). It allows us to step back and put the community at the heart of the decision-making process, enabling us to consider the best long-term solution for managing the coastline. It's shifting our focus away from short-term reactive solutions and allowing us to consider a range of plausible options while encouraging us to leave as many options on the table as possible.

To respond to increasing risk, difficult and expensive decisions need to be made. By upskilling the community on risk, we're enabling them to make informed decisions and prepare for the change by the time it arrives.

Bringing perspectives together for a one-team approach

We started our adaptation planning project by taking a hazard assessment to the community and acknowledging that we knew they had a problem, but that we didn't have all the answers. It was a deliberate yet uncomfortable position to put ourselves in. However, we knew that science only told part of the story and we would benefit from the wisdom of many minds from within the community.

No one understands the realities of living at the beach quite like those who have lived there all their lives. We provided every community member with space to share their story with us. We listened to accounts of what they had seen at the beach in their lifetime and heard their aspirations for the future. Their stories were as important as the hazard assessment itself.

From there, we interrogated the scientists together. We were on the same team, after all. We used this time as an opportunity to learn together. If the community were going to be the decision-makers, they needed to understand how their environment was changing and the benefits and limitations of various solutions.

One of the difficulties in this approach is that building expertise takes time. During this time, community members might change. Each new community member is a potential process disrupter until they are brought up to speed. The sooner this happens, the sooner everyone can move forward together.

Measuring effectiveness

Adaptive planning is underpinned by what matters most to a community and the legacy they wish to leave for the next generation. Developing objectives through this lens enables us to clearly identify what needs protecting, what needs creating, and what we are happy to live with. It prevents us from jumping straight to the solution and supports a discussion on the effectiveness of various options. Good objectives need to be relevant and measurable.

Through discussion, "We just need a seawall built" can be turned into "I have concerns about the flood risk and do not want my house to be flooded." This opens the door to discussing where the flood risk is coming from. Is the property only at risk from coastal flooding, or is a high groundwater table combined with the fluvial and/or pluvial flood risk a bigger concern? This approach enables a broader discussion of possible options for addressing the flood risk, which could involve the construction of a seawall.

Co-creating solutions

We set out to go on a journey with our community. We were open and honest about the limitations, for instance, the costs. In small communities, the affordability of options quickly takes options off the table. In our first community meetings, we explained to each community member that they would need to fund their own adaptation options. By discussing funding early on, the community was able to develop an affordable approach from the outset. It also gave them confidence we were willing to have difficult conversations.

We needed good technical information, but more than that, we needed information presented in a way that the community could understand and engage with. So, we developed a Coastal Adaptation Explorer as a facilitation tool to help the community understand their management or adaptation options, when they might need to do things differently, and to visually demonstrate the residual risk of each option. The Explorer provided real-time feedback to the community on each of the option's costs, benefits and effectiveness. We ran the sessions in small groups of six to eight community members, including one Council Officer and a technical leader from Jacobs.