Following the impacts of Cyclone Gabrielle in February 2023, flood resilience options have been investigated for the Tūranganui, Waimata and Taruheru rivers and the city suburbs of Whataupoko and Mangapapa (North Gisborne City).
The Gisborne city area was severely impacted, with more than 170 homes flooded, 48 homes were classified as Category 2 under the Future of Severely Affected Land (FOSAL) framework, with 24 identified for potential house lifting where feasible. A further 14 properties were impacted by land instability.
Technical investigations, engagement with communities and evaluation of a range of flood mitigation options have helped identify preferred approaches to reduce flood risk to people, homes, community facilities and critical infrastructure.
North Gisborne and city rivers flood resilience report
This report identifies preferred flood resilience options for North Gisborne and the Gisborne City Rivers catchments. Building on investigations undertaken following the 2023 North Island Weather Events, the report assesses practical flood mitigation packages designed to reduce flood risk to people and property while improving community resilience.
The report evaluates shortlisted options for the Taruheru, Waimata, Matokitoki and Mangapapa catchments, including river dredging, debris management, channel capacity improvements and culvert upgrades. It outlines the expected flood risk reduction benefits, estimated costs, technical assessments and the rationale for prioritising preferred options within available funding.
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Flood resilience City North
We're sharing the report and findings and inviting residents, property owners and others affected to review the information and provide feedback on the proposed resilience improvement options for:
- Matokitoki - Valley Road
- Mangapapa
- Whataupoko - Central School area.
Gisborne city
Tūranganui, Taruheru and Waimata rivers and the suburbs of Whataupoko and Mangapapa
The project focuses on identifying and implementing cost-effective solutions to reduce flood risk to around 150 homes across the Gisborne city catchment as well as community facilities and critical infrastructure.
It aims to reduce risk to people and property while improving the resilience of the city's water, wastewater and stormwater systems.