Stormwater and drainage

Christchurch's waterways have drainage, ecological, recreational, cultural, heritage and amenity values.

Wet weather and flooding

When to get in touch with us, how we respond and what you can do.

Flooding and floor levels

Flood modelling information, along with minimum floor levels for buildings.

Stormwater policies and strategies

Policies and strategies relating to stormwater and drainage.

Stormwater and your property

Drainage plans, guidance and information about stormwater on private property.

Drainage plans for your property

Use our interactive map to see public utility pipelines and waterways.

Industrial stormwater

Apply for an industrial stormwater discharge licence.

Surface flooding reduction

Resolving surface flooding at sites that experience regular issues.


Related news

Īnanga relocated ahead of in-stream works

Thousands of nationally threatened native freshwater fish and dozens of at-risk lizards have been relocated to allow for restoration work at Halswell’s Greens Stream.

20 Jul 2026

New reservoirs strengthen Akaroa water supply

Akaroa’s water supply has been strengthened with the opening of two new reservoirs at the L’Aube Hill Water Treatment Plant.

17 Jun 2026

Study sheds light on Ōtākaro Avon River catchment flood risks

Flood risks in the lower Ōtākaro Avon River Catchment will increase over time if no action is taken, a Christchurch City Council study shows.

16 Jun 2026

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