Waikato District Council

Source Documents

These are the council documents used to build the WDC2 calculator. If a link is broken, the document may have moved on the council website.

📄

Stormwater Design Guidelines + RITS

PDF Primary Source

🌐

WDC2 Stormwater Information Page

Council website - may contain updated links if documents above have moved.

Calculation Methodology

Retention

None - detention only

Method

RITS adopted as engineering code of practice. Hierarchy: retention for reuse then soakage then infiltration then treatment/detention. Post-dev discharge must not exceed pre-dev.

Design Requirements

• 10-year ARI design event
• Hierarchy: retention then soakage then infiltration then detention
• Post-dev discharge must not exceed pre-dev discharge
• RITS adopted as engineering code of practice
• Stormwater Bylaw 2021 applies

Submission