The Council is required, under its Comprehensive Stormwater Network Discharge Consent, to develop stormwater management plans (SMPs) for each of the district's seven major catchments.
These stormwater management plans detail how water quality targets will be met in each catchment, including improvements to existing discharges and ensuring that discharges from new developments do not degrade water quality. Stormwater management plans also cover flood management and catchment cultural values.
View the following completed stormwater management plans, certified by Environment Canterbury:
- Ihutai-Estuary and Coastal Area [PDF, 9.7 MB]
- Huritini-Halswell River Area [PDF, 12 MB]
- Ōpāwaho-Heathcote River Area [PDF, 14 MB]
- Ōtukaikino-Outer Area [PDF, 8.9 MB]
- Te Pātaka o Rākaihautū-Banks Peninsula Settlements [PDF, 18 MB]
We're currently finalising the following stormwater management plans, aiming to have them certified by the end of 2026:
- Ōtākaro-Avon River Area
- Pūharakekenui-Styx River Area
