As Northland moves through the wetter months from May to September, the Northland Regional Council is warning effective planning and management of earthworks is critical to reducing environmental impact and ensuring successful outcomes.

"While significant rain events can occur in summer, late autumn through early spring sees the most frequent and intense rainfall," the council’s Compliance Monitoring Manager Tess Dacre says.

"This increases the risk of sediment discharge from open sites and poses real challenges in compacting fill and managing stream works."

To safeguard water quality and prevent erosion, developers and contractors are urged to:

• Minimise open earthworks and avoid stream work during winter
• Stabilise as much of the site as practical by 30 April, well ahead of the official winter season
• Align work with topography; low gradients and short slopes are easier to manage than long steep ones
• Identify necessary erosion and sediment control measures and consider additional options to lower discharge risks
• Ensure controls are easy to access for routine maintenance
• Progressively stabilise exposed areas throughout the season
• Arrange reliable access to stabilisation materials such as hay mulch, including provisions for urgent needs.

Ms Dacre says if operating under a regional consent, a winter work approval may be required and ongoing stabilisation of open areas is a key condition for approval.

"Winter doesn’t have to mean work stops - but it does require smarter, more responsive planning." "With the right strategies, we can protect the environment and keep projects moving."

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