The Council will help property owners who've had frequent above-floor flooding, where their flooding has been worsened by the earthquakes, and planned flood mitigation schemes will not offer a timely reduction to their flood risk.
The Council will work with these property owners to determine the most appropriate, cost effective option for their property, which might be reducing their flood risk through localised drainage works or house raising, or the Council may offer to purchase the property. A purchase offer would be voluntary.
Flockton is the first area where this policy is being applied, having been through a long process of investigation and flood mitigation design, and understanding which properties will benefit from timely area-wide mitigations, and which won't.
In other high priority flood risk areas, once the Council’s Land Drainage Recovery Programme has completed flood risk investigations, if there are still properties at high risk that won't benefit from timely area-wide mitigation, the Council will offer the same assistance to these property owners.
The process the Council will go through to identify properties that are eligible for this assistance
The Council will offer assistance to property owners whose homes are at risk from flooding during regular rainfall events, where the earthquakes have worsened this risk, and the home will not benefit from timely, area-wide engineering works to reduce the risk.
This process will take time to complete across all high risk flood areas.
The Council is fast tracking flood investigations to understand the risk, prioritise those most at risk, and develop sensible area-wide solutions that offer the most benefit, to the most people. The Council has committed large amounts of funding and resource, but it will take many years to implement the flood mitigation works across these priority areas. We will work with communities to keep them informed of what we are doing in their area, and give timeframes wherever possible.
To be eligible for the assistance:
- The property must be residential, and within the Christchurch city urban area.
- The habitable floor (excluding garages, laundries, sleep outs and utility areas) is at risk from a one-in-ten year flood event, (a flood that has a 10% chance of happening in any given year, so a probability of happening once in every ten years) as confirmed by Council modelling and a survey of the floor level.
- The earthquakes have worsened the flood risk - assessed by eligibility by Council flood modelling.
The policy excludes tidal/coastal inundation flooding. Homes will not be eligible if catchment works will eliminate the risk of flooding to habitable floors in a 1-in-10 year rainfall event; or they are to be rebuilt; or foundation repairs will see the floor level raised to comply with the Building Code.
The policy will be funded from the Council's Land Drainage Recovery Programme budget.
More on what’s happening in other areas to reduce flood risk.