The Estuary and Sumner Flood Protection Programme includes Southshore, Redcliffs and parts of Sumner.
Flooding of the Estuary is driven by extreme tide events. The options for flood management being investigated include stopbanks, floodwalls, new pumpstations and new and repaired pipework to restore the stormwater and drainage network. All options will have to consider long-term impacts and benefits.
Estuary Drain flows into the Avon River, collecting flows from the catchment roughly bounded by Bexley Park, Cuthberts Green and Aranui Primary School. The drain suffered earthquake damage, and is planned for repair.
Planning for flood mitigation work on Breezes Road Drain - within the Estuary Drain Catchment - is progressing.
Breezes Road Drain runs from near the Estuary end of Breezes Road, behind Delamare Park and connects to Estuary Drain in Bexley Reserve.
In the Estuary Drain area, earthquake damage has reduced the drain’s capacity. This, coupled with earthquake damage to drainage infrastructure throughout the catchment, has increased flood risk in the area.
The flood mitigation option agreed on for the Breezes Road Drain includes the reconstruction of the drain along Delamare Park. The Council is currently investigating the optimal alignment and design solution to reduce the flood risk in this catchment.