Western Bay of Plenty District Council

Source Documents

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

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BoPRC Stormwater Management Guidelines (2012)

PDF Primary Source

Calculation Methodology

Method: BoPRC Guidelines

Permissible discharge equals pre-development 1-hour discharge. A comprehensive stormwater consent is held by the council. Storage volume calculated as V = 1.5 x Q x D.

Design Requirements

• Permissible discharge = pre-dev 1-hour peak
• BoPRC 2012 Stormwater Management Guidelines
• Comprehensive Stormwater Consent held by council
• Water Quality Volume: WQV = 0.033 x Awq
• Extended Detention: 24hr drawdown
• Stream erosion control when imperviousness > 3%

Submission

Required Documents

• Stormwater design per BoPRC 2012
• Pre/post flow calculations
• Engineering plans

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