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Far North District Council

Stormwater Detention & Retention Requirements

Northland Region

Source Documents

These are the council documents used to build the FNDC calculator. If a link is broken, the document may have moved on the council website.

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FNDC Engineering Standards (May 2023)
PDF Primary Source

Calculation Methodology

Design event: 10-year (10% AEP)

Method: Engineering Standards (May 2023)

Developed from Whangarei District Council standards. Engineering Design Approval (EDA) required for all works impacting FNDC assets.

Design Requirements

  • FNDC Engineering Standards May 2023
  • EDA required for works impacting FNDC assets

Submission

Required Documents

  • Engineering Design Approval application
  • Stormwater design
  • Engineering plans

Contact

Phone(09) 401 5200
RegionNorthland
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Last verified: April 2026 · NZ Detention Tank Calculator