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Frequently asked questions
FAQ
• Overland flow is stormwater runoff flowing across the surface (e.g. through yards or across streets) during rain.
• Mainstream flooding occurs when a river, creek, or major drain overflows and floods nearby land.
We assess both risks and provide reports that meet council floodplain management policies.
Not at all. In fact, private drainage easements are often:
• Narrow (usually 1–1.5m wide)
• Located in non-buildable setback areas
• More cost-effective than installing a full On-Site Detention (OSD) system
• Legally secured and usually low maintenance
They offer both short-term savings (simpler construction) and long-term benefits (less maintenance).
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