We give flood hazard advice across the Wellington Region, our webviewer can help you check locations that are at risk and the team can provide advice on developing appropriately in flood hazard areas.  

Flood hazards maps

We can assist you with identifying potential hazard to your property. Territorial Authorities also hold information specific to flood hazard. Wellington Water hold stormwater flooding models for Kapiti, Porirua, Wellington and Upper and Lower Hutt. Local district plan rules apply when buying, selling, or developing in a flood hazard area.

For detailed advice fill out the form below and one of our Flood Protection engineers will respond to your request.

Territorial Authority Flood Hazard Information

Territorial Authorities also hold information specific to flood hazard. Wellington Water hold stormwater flooding models for Kapiti, Porirua, Wellington and Upper and Lower Hutt. Local district plan rules apply when buying, selling, or developing in a flood hazard area. Links to the appropriate sites are here;

If you are going to dig or excavate into the ground please contact Before U dig. This is to make sure your work doesn't become a problem for others.

If you live outside of a Greater Wellington managed scheme you can receive isolated work funding. This funding can be up to 30% of actual cost.

If you are planning works in or near a Greater Wellington waterway, we can keep you informed of flood alarms that could affect your site.

Greater Wellington hold flood models for many of the major waterways across the region. To request this information please fill in this form and email to Flood Protection via info@gw.govt.nz

Responsibilities for watercourses in the Wellington Region are split between Regional and Local Authorities. For more information on roles and responsibilities follow this link.

GW has prepared a number of technical guides to assist in those working in flood and erosion risk management. For more information on technical guidance follow this link.

Updated December 14, 2021 at 5:00 PM