Option B

A secondary stopbank from the terrace opposite Groyne 8 to the east of the airfield 

This option would involve building a second stopbank further south of the river, starting around Groyne 8 and connecting back to the primary stopbank just east of the airfield.

Option B: A secondary stopbank from the terrace opposite Groyne 8 to the east of the airfield

 

Pros

• This would maximise the length of secondary stopbank protection
• This option would provide increased flood protection for more people living on the south of the stopbank

Cons

• This option would have implications for potential land development south of the airfield
• Constriction of breakout flow where the proposed bank first crosses Mount Thomas Road, requiring mitigation for high water velocities
  
  

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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