New Zealand flood information / Tasman
Tasman regional guide
Flood protection in Tasman
Tasman includes wet western catchments, major rivers, low-lying floodplains and coastal areas. Heavy rain can affect the Aorere, Tākaka, Motueka, Waimea and other catchments, while slips and road isolation may accompany flooding.
Representative regional image: Hector Garcia, via Wikimedia Commons. Licence and full attribution details are provided on the linked source page.
Understanding flood risk in Tasman
Golden Bay, Motueka, Richmond, Māpua and rural valleys vary in catchment response, tide influence and the number of available access routes.
Aorere, Tākaka, Motueka and Waimea catchments
Confirm site-specific exposure through council mapping, local observations and qualified advice where required.
Low-lying floodplains, groundwater and drainage
Confirm site-specific exposure through council mapping, local observations and qualified advice where required.
Coastal inundation, slips and road isolation
Confirm site-specific exposure through council mapping, local observations and qualified advice where required.
Monitor rainfall and river flows upstream. For low-lying sites, include groundwater, ponding and the ability to pump or drain water trapped behind any temporary barrier.
Planning for people, places and continuity
Schools and early learning
Consider road and bridge isolation as well as water on the school site. Set triggers early enough for families, buses and staff to act safely.
Iwi, marae and community facilities
Marae and community sites should combine flood maps with local mātauranga and event history, preserving evacuation access while protecting wharenui, kitchens, services and taonga.
Councils, businesses and organisations
Horticulture, tourism, councils and rural businesses should identify access dependencies, refrigerated stock, pumps, electrical assets and alternate operating arrangements.
Official Tasman flood information
Use official warnings first, then regional monitoring and hazard information. Live readings can be provisional or interrupted during severe weather.
Prepare before water reaches the site
Use flood maps, LIM information, past events, drains, contours and site photos.
People first, then critical entrances, services, records, stock, plant and continuity functions.
Choose the forecast, gauge level or on-site observation that starts deployment.
Assign roles, label equipment, time the setup and review after every exercise or event.
Portable flood protection options
A doorway, garage, loading bay and whole-site perimeter do not need the same solution. Expected depth, flow, ground surface, width, corners, storage, deployment time and drainage behind the barrier all influence the choice.
A continuous barrier line can be configured around vulnerable areas.
Dry-weather training helps teams deploy safely and consistently.
Turn Tasman flood information into a site plan
Send Special Solutions Flood Protection photos, measurements and what you know about how water reaches the property. We can help identify a practical starting point for a home, school, marae, council site or organisation.
Request a free remote assessmentImportant: General educational information only—not real-time emergency advice, engineering certification or a guarantee against flooding. Follow official warnings and obtain property-specific advice for life safety, building work and critical infrastructure. Information and links reviewed 8 September 2026.