Option C

A secondary stopbank starting at the low terrace across Mount Thomas Road from Groyne 7 to the east of the airfield

This option would see us building a second stopbank south of the river, starting south of Groyne 7 and connecting back to the primary stopbank just east of the airfield.

Option C: A secondary stopbank starting at the low terrace across Mount Thomas Road from Groyne 7 to the east of the airfield

Pros

• As with option B, this option would maximise the length of secondary stopbank protection, meaning:
  • It would provide increased flood protection for people living on the south of the stopbank
  • This has the benefit of incorporating more natural terrain features into the design, which will minimise earthworks when we come to construction

Cons

• This option would have implications for potential land development south of the airfield
• Many dwellings within existing breakout flow towards the west of the river (the Ōkūkū confluence) would not get additional protection

Note the options included here are for the part of the river that extends from the Ōkūkū confluence to Rangiora Railway Bridge. We will share design options for downstream areas later in 2026. You can add comments directly to these options or give your feedback via the give feedback section of the page.

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