The Hawke’s Bay region is located on the eastern coast of the North Island of New Zealand. The region’s 353 km coastline supports a diverse range of habitats underpinned by the unique geological history of the area. The region is dominated by Hawke’s Bay itself, which is 94 km across its widest point and includes the region’s largest population centres of Napier and Hastings. The region has a population of 164 000 (June 2017) and is renowned for its horticulture, with large orchards and vineyards on the plains. In the hilly parts of the region, sheep and cattle farming are dominant along with forestry blocks.
Natural disasters, storms, coastal erosion and inundation along Hawke’s Bay’s coastline have, and continue to damage, property and threaten people’s safety and well-being. In 1931, the region was devastated by a magnitude 7.8 earthquake, New Zealand’s deadliest natural disaster. The earthquake resulted in significant loss of life, damage to property and infrastructure, and coastal areas around Napier were uplifted by around 2 metres by the quake, and around 40 km² of seabed became dry land. From a coastal processes perspective, the effects of this dramatic change are still being felt today, with coastal margins continuing to adjust to these altered physical conditions.
To plan and respond to the ongoing challenges and community concerns associated with coastal hazards, local government and tangata whenua in Hawke’s Bay are developing a long-term strategy. The Clifton to Tangoio Coastal Hazards Strategy 2120 (“the strategy”) takes a co-ordinated approach to identifying and responding to coastal hazards and the influence of SLR over the next 100 years. It is designed to create a platform for long-term planning and decision making in the Hawke’s Bay region.
The first iteration of the strategy focuses on the most populated stretch of the coastline in Hawke’s Bay; from Clifton in the south to Tangoio in the north. This area includes the city of Napier; coastal communities including Whirinaki, Te Awanga and Haumoana; and key infrastructure such as the Port of Napier and the Hastings Wastewater Treatment Plant.
The strategy is being developed through a Joint Committee formed by elected representatives from the local government: Hawke’s Bay Regional Council, the Napier City Council and the Hastings District Council, and groups brought together for Treaty of Waitangi settlement processes including: He Toa Takitini, Mana Ahuriri Incorporated and the Maungaharuru-Tangitū Trust. The Joint Committee has been formally established under the Local Government Act (2002)2 and therefore has legal standing and is subject to standed Council meeting procedure and protocol, including the requirement for meetings to be held publicly. Supporting the Joint Committee is a Technical Advisory Group formed by senior staff from each council and led by an independently appointed project manager. The strategy is being developed in four stages, as detailed in the following sections.
The strategy was originally developed to respond to issues raised in a technical report commissioned by the Hawke’s Bay Regional Council and to ongoing community concern about the effects of coastal hazards. It also provided an opportunity for the councils to work together on a complex cross-boundary issue.