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.


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Deep below the surface of Whakaraupō Lyttelton Harbour are invertebrates offering important clues about the health of the harbour.

17 Dec 2025

Harewood Road ‘super week’ starts in January

Contractors will be working 24/7 in a ‘super week’ of construction to speed up the installation of new traffic signals and upgrades to water supply pipes on Harewood Road.

16 Dec 2025

Fresh start for South Hagley Park waterway

The Addington Brook renewal project has been successfully completed, marking a major step forward for one of the most polluted waterways in Christchurch.

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