A Dewatering Management Plan (DMP) is a site-specific document that sets out the methods, controls, monitoring, and compliance requirements for managing groundwater extraction during construction, excavation, or land remediation works. It addresses technical, environmental, and regulatory considerations to ensure dewatering is conducted safely and within approval conditions.
Groundwater management is a critical component of excavation, basement construction, tunnelling, and contaminated land remediation. Uncontrolled dewatering can cause environmental harm, structural damage, regulatory breaches, and costly delays.
A DMP provides clarity and confidence for regulators, contractors, and clients by outlining:
DMPs also support compliance with state and territory legislation, including:
Properly designed dewatering strategies protect receiving waters, prevent soil instability, manage settlement risk, and avoid cross-contamination between aquifers.
A Dewatering Management Plan is typically required when construction or remediation works intersect with groundwater or require its removal for safe or effective project delivery. Common triggers include:
Projects involving foundations, underground car parks, or lift pits often require groundwater control.
Sites with impacted soil or groundwater may require controlled dewatering to enable excavation, treatment, or validation activities. In these cases, water quality monitoring and treatment specifications become central to the DMP.
Road, rail, pipeline, and utilities projects often encounter shallow groundwater or perched aquifers that must be managed to maintain safe working conditions.
Where groundwater drawdown could affect nearby vegetation, wetlands, waterways, or adjoining properties, a more detailed DMP—and associated hydrogeological assessment—is often required.
Many jurisdictions require a DMP as part of:
Nova Group Pacific provides end-to-end groundwater and dewatering expertise, supporting compliant, technically robust DMPs for construction and remediation projects.
Our multidisciplinary team delivers:
For tailored groundwater and dewatering support, contact our team for expert guidance and DMP preparation.
Explore related glossary terms to build a stronger understanding of groundwater and construction compliance:
Whether you need site assessment, remediation, or environmental consulting, our expert team is here to guide your project from planning to completion with precision and care.
Whether you're early-stage or ready to build, this tool helps you work out what reports you need — and how to bundle them into a single site visit.
Fast. Free. Custom to your stage.
We provide sustainable contaminated land, remediation, and geotechnical consulting services across Australia.
.jpeg)
